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 0x8aa1730669e00a62048fac466fe4d430c03d6740e024e2735d1673b823a07b79. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aff41897-61c5-4d3a-af1a-ac704fe7b312.json and https://artists.proofprofile.net/proofs/artist/aff41897-61c5-4d3a-af1a-ac704fe7b312.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 0x8c7b08fe491d293352e660ca339800a24c1f689ec4ea6881e5be881f61b9de4b. 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/ATDD70900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bddf2b46b37a47cf13237b965a4ce6642537281190e66644a5fe558fa57c696. 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/ATT251116190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a6a11d4f917ddadde7a4cef9a1c6e1b93ef5fe7cf868b5dc1c3850dae63a90. 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/DEEP81100668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c4b18dabc2d41617ee22ab5c34ea7ef7a00baf8321e8c1b87ea57ce6b2c036. 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/ATT251000830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaed5ef1cf47985ca92c5196a65e5ee4c7a0f65eec2fcc5c84f59d95451482ba. 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/DEEP81100683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607d598cc7b1cc5982dd15488fbf1dfbc46d5eb4eee764e076eda2b86b0ff500. 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/ATBH81100305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b5fa6a7861ab28f6b71b4a6feb42d11fc66477bc6897a3c8879b5c76663921. 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/DEW241000386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff317923e70cf3557f732039490c7f3117061708474b8a3ba9e0fa1c420a419. 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/ATT251101320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31938b8c26a6c5aa8481fb12651dee25b667fbe3bdd53a1e1b778fbfae4ef061. 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/ATBH81100314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6990ab55203565f3137a846c8b57a637a2458bb23482cdf33c4aa9f063193483. 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/DEEP81100669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd238797fdd58e04345d6eb2bfb17925ef3f0162d2f8625ffb277d24ad7fd3a. 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/DEOM41100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4065dafad811effc3054be48af79aca143bb3d92ffcbe98addabdf104d860884. 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/ATH301010030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdb9b6efc167a15bae85d6e947b35415b7d4e47c0c6e5e15c0b1d476ea9cf4a. 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/ATT251104480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a932e38714f0c57448975ab2f50e124654ecec604be2a291bab9ed91af5a2aa. 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/DEEP81100680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf40df1a573dd4bd9d57808a8b0d7c32693ae717003bbdb832ecb5ca50fd4f2. 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/ATB571825039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ba441af618198b13b6fe258a41cb9b2df5861f5074445426582012a2d6e426. 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/ATB571720113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294e24809a672462abc261468c5fa913a04cce8155d105bfef1bd53d8dff0c47. 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/ATB571720101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf117f05ef568ba131850b7679b4a6c258753c864fd91b35d4e2440c1386edb0e. 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/ATB571720103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5d579796c928af3b82bb879ca205ec85f133178ed59c32d4c78edfc73f1f4f. 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/DEEP81200462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f69ce9c48e82dc08736293c95f65968ae112d7c939bc54252c90150e50ce27d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEEP81200464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a74fccea182684ee0f4e81ce14fda12fc68d4aa961db78e49ebd56ffac1aeff. 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/DEEP81200466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bd4b1ddf9610da6b8c334dd9db58b5650f3ab396837ba3e1cd1d1008017ab2. 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/DEEP81200468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cc2237048258bf6f5eeb6d1b81ea2709d1db345110651d042ff272dc217691. 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/DEEP81200472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2cd79a00e68b4cc6f274352b1fc7e6c158115ea7df2403e96d95286d64414a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEEP81200477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fdb680ef4d4d030c3c1447421492f03f1fde8bc7621f7b76300acc34bdcdbd. 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/ATB571004231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc255d56987aa93f21d630e35225a6c184321dc2bb75adc5fdbc00823ade02d7. 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/ATB571004233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a80c6eaf1e57b696caec70c473c24fb031f8d39e9e7ee07c12614e9bfe0090e. 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/ATB571004234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f698ee6cda7faf1db05a49135ee792a02789d9dd071469bcb619f056a58f89. 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/ATB571004235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f98c3938d83d2101c6de91e84cd5f5739dac4a94411a93711aae133bf082809. 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/ATB571004236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73ddc7f3f157e9876cb84008afb3fb4dbb278257a35b87fb256913a53569bbb. 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/ATB571004241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199ca4d8913aa2c9b0bae4e3ccaff6dea0a8f6da8f3626d75f3002736cd0187c. 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/ATB571004242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4035c50089dde6ea06c4775936e0bd50166e777cd0e31f8940375215fcdc69d5. 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/ATB571004244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931338c47f43f3140b8e689cc591eb27c49d45b12254df1c5f9197fbaac463e1. 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/ATB571004245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1aeac2cb2cec3d68e60e959d8b77e1a84cb9fb3ccad6c27f58a8e3751720a1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ATB571004246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b04de30996adad637aa8e1d0fc959e077a0a096215b6340228b0dbed43cf31. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:50Z), 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/ATB571004232.