1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ef9796867ded496af8fba9207cb8b6d5c487369d2d3d3f00be193941f43a84. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/766c81c6-b0e4-4518-ad9f-8915faa36bfe.json and https://artists.proofprofile.net/proofs/artist/766c81c6-b0e4-4518-ad9f-8915faa36bfe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hair (Original Broadway / Off-Broadway Cast Recordings)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c70556b67bc1503dbaacd364ec99442410d56beeb9c3fe84a421b3b4ac7f6b8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724a5968d6da411cbf8c1e8c78d4ca8e11be05761870cad2ad24efd70ac4fbfe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ffb376026415ad78e4ad6310e546e90a00dcf04f82479f30339e0e90a31b39. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c48d679d90959a03f06f80255bf0c7d3712c25af75308577764740b88d38f74. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c8541fe35b111109bb480a770ae95359f52a4df34efe6efe0bee7db9ed5b3e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4b216ba7b4082a56bd269e28ba11eb4c5744b4d2d43bfc4c850ed3cbb11ffe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c57f29d68eb80fe945fa0b411fa34ba791678e2885822a2621120ae38c2822. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641afeb9be8828f8ea952acd6c46d824003c225843cee386569520b477b8a2aa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4887575b208cb9cf3250d6af2379403a3550ed9b5e9ec173d2596c1d117c62f0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345945b719953035c4b7d5a630fb1d870e08dedb9c57ff486796d627ba19aaf6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf581bdaafd1fa7a66755703d05c81df9e945e47a97b784007260d0942646df86. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83badf911fc80b7942bbad31c0bcf81deb2e3e9ff2fbb5aba9bcbe8082010c6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81df0294e9365650f4071d165332efb50b3b79d5a455e2fdf49acc78d6797c85. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fe36f34fc0d4f5df0126e5763976a21235bdd20b115aaa7d539b87acc9e758. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c43d94e307e94c7d4715e28905d2daf2db05f31171b4be44076a1a4e7604c4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300257.
What a Piece of Work Is Man / Walking in Space (Reprise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0689601a7b43903debf1228df55830801889abdad29e9c23e455545c542ee3ed. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300258.
The Flesh Failures (Let the Sunshine In)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a196e7f521b0ebffe3c604e4329e0849b902d0cd4a496896b0bef34a9807e3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV110300261.
Sweet Charity (Original Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c0c7989d8613e406a28ed1b9c27737291d042283223ba8631f31b39acd2cb6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa878dcd775806886e0b889cb3fe44542a22b4b091e4c258bc3ddb09c82ba4acc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ccb1d315f21638f92f25f6a702b41375f8a65cc563dd9f5629af6f5fbf1755. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4f729bc787582a58e42a8264ef4ca9dca1c2f22aed0d66c5888e81e5af0c63. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0152765bc27cd5fac1639e8b10540185a302c91839cbfd7104ea420e91c7fe18. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db5b8585a9af2b63d234f3d47eb82822bcbb771665b86692bbcb7bca731ed6a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411169.
Sweet Charity: If My Friends Could See Me Now
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd27b2a077205705274bad176faf4eec7e57ba023178b047291bc92e4be9e277. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053a731ccb9b9d4f853270fdc0463fae71566850db4279369608efdb288333d6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411171.
Sweet Charity: There's Gotta Be Something Better Than This
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893a028a9994112674e7d5c9c867e10dc0cbeb66000a9beee4b636d93ae72423. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411172.
Sweet Charity: I'm the Bravest Individual
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73fa6c52b8b63e17b0e1dc80222c21c593ca169f61407eaee4766b267bfce55. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63763ec4364327c610cfddf5655b6c2c5e03630e520011da84de460c1d50fd9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2c36cdda9a2776bcc5a31ca903ee57b929a6c0794a50d69be78c2ccb59c065. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb1e36fccffb7dead9fcc4a7bfd17580380a71691bca9d16e10ff20dbeaae7f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3716f067c84c92851d12dda0d2d5db23db3dad1c4b5e5949bf2c98736371f03b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afcf007f70d9fbd4925e69c7564d0dab26c13a2a6a09d4e3d9c12d23d489947. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411178.
Sweet Charity: I Love to Cry at Weddings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281e5b2ff99a0fd38c6ee09df145dda49b6d2b7e4e9a2ac7f7a1cab629eeefc5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89c4102b70176508d1a837f504266d9b8af1514a166d9cd93c978c6f3a23095. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf03c60b190af2e5095951838c451d0d12a524fe20c5ef3ecf66a0dbe2d99418. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM16601100.
If My Friends Could See Me Now (Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ce7fce0b0e83b69dc3e64760ad0e6bf6c3b539630c6abc732067ed18bbebb9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM16601102.
Opening Night: Introduction (Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ea8bed7655d79ce4f6f8d85a912a4c1c9c4563dc438f91c4b303451c895abc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM16601103.
Opening Night: Gwen Verdon Interview (Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0612a6593ee740b32d67470bc02a98fe0006d897882708541bbb4fae62396314. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM16601109.
Anyone Can Whistle (Original Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe726a9bdef85ee16b0c3bc9e1d8487e6f344dd6d5ec0946607a957c0463003fc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10213299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb790adaa82d8fc54fbdf4dadbb69e8eaee313e65ac4dff83ca61e05a432c24. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10213301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81211b43eab185c8d819def7e9cf3df66c16470ce65e9682256ca05011d40bc3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10213304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd62172ee49b027f0632ad9dacf6f19d28686d3cf59deff38382fcdf0252d9d6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10213306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537146de1b82eeeb091e0e398c5d42ea8de9913704345dcb16dcaa9f52919eb4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10213309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384ca7c97c7de1061d19b237edd167c407a1a4fc971ed2240cc15f5d7411211d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10213310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1236c82444cdfe42d95a022c5529ab42142025b0c614682d2c858e095a65edf. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10213300.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e5c458432c9f1f9c4237ea96d7a33ebf99c2686b99879e0ee0e3a7fa9f00b4. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10213302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b8b111f556e725d67dc39660862f9576e9a41f2a02f19177b9d9f61c64f8cf. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10213307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935f02647ca2d3655547bdfc6efbbc607c06dd7899ea8c5119bc54c1d2e283f2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUMC0400383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249acfc39a0cea3eb71412fbdaa2cdc05520b80ed5eec4bcf95733c3fbee2b20. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUMC0400384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cce231bbfb30289c2ec60773d6c120ef31b2ded406f50ef3f079d70c187fa44. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUMC0400397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17304105d9cf3fcc48971b2712ddf53bd7e7a3fe2cd486dd7358ec77e8bb6498. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUMC0400398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034b42cd2c8c13ded1a9b7ef3a9f6686b569d846735fbfbd96ee59c76b98e7a8. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUMC0400385.