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 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 0x3320d4f6b6bf8c2798d3e1c6234767e61de1bca4f66989428c84dbbed7295e30. 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/a608c5ab-1943-4206-a410-7e5b8936287b.json and https://artists.proofprofile.net/proofs/artist/a608c5ab-1943-4206-a410-7e5b8936287b.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 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 0x6d26720d35e421a4989edfae74c52dbd842f5041de4e8882007e9116492f5437. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USHR12040155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ac59d92893eb67d8f412688f3a14dd1fa37c63b42934a79a2fd86f57de7dc2. 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/USHR12040280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e17fb3f0843af1ff093213506dc8fd71ab62e7cf0801b4e3ea0fc2110c82e0. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USHR12141388.
I Believe (From National Geographic's "Planet Possible")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46828234051f9accb3b921bfba5f5850382ab961694083bf6d7802e1e4bdb3d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USHR12141618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08fd576e54acf107e8414c8c27b50dffdcdbe382430eb3adf897e8973d472fb. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/USHR12141744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fef641c89461c24769cd40291510c11e828c10b899c7b6e8f2de4e4687b0dd. 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/USHR12142147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b72dd2f121cc73e99731d3f787a81975d04ef47c6c2a79f206322ec064ce086. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZLBC2200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4092bba28215c71b0bb8dd89994c36683a57bdf72fdf7d95d13c5610b778df8. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZLBC2200327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89867a4d91b6207aba9bef0d9574f2f27ce80c937c12ef1b3c3e146d2e69cd4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZLBC2200328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb2689ef7fdd540b1c911ae0c6bc5ea9a450678d8a2b16b776fe365d143a92d. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QZLBC2200543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc0d3c18449bcc5b83af317dafa04c2076cc465613f1a7935bece7cbf5eee5e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZLBC2200542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8a44745c46e283110561bb769321aeec263273fea50af38102b665d88d9aae. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZLBC2200544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521816744139d5239a5b12d8ea5db8d86c674623e0784ebc7707897bc4a529d7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZLBC2200736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f49a7b34c4541953557b7e88b1f52dd8ec67f25ad96a9912d01e112eb972e10. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZLBC2200871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2578ee5987312779aa9511c60917d84f9feca12d739c7591419775f551f3e437. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZLBC2201268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0512859359e805008d3eecaf338c73cb19f7d39a883c30b97eb1b9f76a80e029. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZLBC2320543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af991e429cbec58d2555b28f8dd5ad4c094588d9302804a05ebc47aac80ff5d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZLBC2326317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd702ed4faf37a75c1edddb60591d7722fed42794ff8ec32ab8b3068b3338bcc. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZLBC2416965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeb545794c17f452d68ae3f229a2e2c825bf3a7f73c429413a91aad7e018146. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZLBC2420466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd702ed4faf37a75c1edddb60591d7722fed42794ff8ec32ab8b3068b3338bcc. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZLBC2416965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cb0049b426c4ec40ae35f53961602c4f1afbe936fd5a781d6b36ceac6fecbf. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZFZ62581164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203a45ec1a3000d862098110259686a41065cbfc13731f0556b7a05cf7c327b8. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZK6L2531914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501081746450255b9b79f6f68ab2581b4307ad94605335884e5a2fbfdd09a19d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZHN42547628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374b5c799c696cb99db2200097b16ea82a6566e46ce88fe0364a20858dcd1e07. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWFR2519619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bda7d81dcfdc58be2fe5dc4f04da96672b68b401e96c4b48feec2c8d3388ea. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTBF2582939.
tape 1: That's Love (feat. Alt Bloom & DOUBLECAMP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bccd7c781eb5c2bc9e456dd9f590fc9c693bffb68185adc799bfc2feee06a0. 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/ITB002400786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca357c81529fa603c9ca23bbb4466b03504da7b69f8a4151857de54b2b6a497. 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/ITB002300817.