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 0xf937241dee46f2f330c76f484cf45bab33a6a780aca23419aa8479363f4beb7e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a94e790d-385b-4cfa-b4f2-a5f5848725c9.json and https://artists.proofprofile.net/proofs/artist/a94e790d-385b-4cfa-b4f2-a5f5848725c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x814dfe95d58629c71b32b8d8c9af5421f7a642358382a2d978e74a4e77e9080d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:28:04Z), 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/DEL162050302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f6d48ae90a8673815ee8088d20bede416279ee714abd3189b1af4b9f80f7fe. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEL162050304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22756bf35e9361ae1c2deacbb0a840f164813a25e2123e42beb0ae7c9e7ef66e. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/DEL162050305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1145e86fa51286fbe48d6d88600826f7c6d4da916bf9ef2a295b5c85492d1533. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEL162050308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e6a308484c07654a0aa8d18553f870ce92e93326e32f2920dd76db2e21dda7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEL162050309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fad60c356ecb1b2f0abb6ebeb9f381361a8ecf0eb7f6b38b696eb1f1c9045c. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DEL162050312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a851831eeeb24c3cd8eb4a1f4e18dd5ac852d93fc0c21a033e18f90c4be2600. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEL162050314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7bfac108c340b80bb15ea8df654a11c34c366e47241929d57d39776852749d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEL162050316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2873bbc49c1f6304c9431d30f8b8d65729309817b75cabf52380ac70ddb949. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/DEL162050317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb6ffe5f2761586dbb873667d0f40618408694ffc5cc1a824c7faabe309a378. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:51:22Z), 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/DEL162050318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68cac9a692f3512d621dae5e7f34798598fd7945f4e5681bc39671d66295b4d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEL162050319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3780ceb73cb76f367d86934b1b4fb4563db98ebce6415602ab043de16aa31d19. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEL162050328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2c7a0178ba5c2f327c4a1c691054e6bc5ea8737d4ed5ae88f5365255e2a2a1. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:41:31Z), 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/QZNWQ2145445.
Relaxing Singing Bowls - 3D Nature Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f43b8d84091cd8edb10e0e9681acf53273e5240901826c443d3536164306d82. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEL162350302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357f406c3592a8b25ecfbf2ff8b790596fe1fa4232cc812c114a56167ea39456. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:00:33Z), 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/DEL162350305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465d39002e0a560177bfc9bb3161731518a506c2b02270f3f136938c5268f576. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEL162350501.
Relaxing Singing Bowls, Pt. 3 - Ocean Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024b76e2dcca133bd45a5ca137b5ffc0731cd39c2e21e83f6ce9028f6e676d74. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEL162350503.