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 0xc8a2a7edc2a4e9c876e916e4e8b22adf9f53218446b5776796493c1ca7d783ef. 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/1ff9d0e4-ab01-40cd-a426-e0196ffb0350.json and https://artists.proofprofile.net/proofs/artist/1ff9d0e4-ab01-40cd-a426-e0196ffb0350.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 0x1e6f7f65500930fe7872c91111c86fb501686d89a0059b64205eaf821f259dc0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTB22237338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f529e07502c1cea12f6b7d163baa50f72070725a87492e1bbd6e3cc79cce50e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6P2380575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc543af7a4cf0c84893f9aad4329a06c1e0d9e9388301072260b040e66df8d9dc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFYY2304861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c1e68bd97f0eb2c01b2ae95048b57bc15d85fb90c3d3cb17b6b8d184e7ad91. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN82378979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb558205b78f578a91668d7d7f592d61720fd8ca508bf6b104a59bbeb430a3cdb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6P2380576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac5a95c4d76379a1194fa31b0ffd6a75f4662f69efbe65387e5228e8185ca55. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6P2380577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe517fd6823784e13034bc1ab27bfaa0f9865bf053c1c05195fc5a2bde4405e98. 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/QZFZ62366527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef98e98c95b4ca59417113c5d036a6119ed2adb8146343385aa2452db4bcca73. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6P2380578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19814587ed85fb1a55513df442a29977906b394d3b3ee5b0a3713b8265bde99. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA82338793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0020e624aca64aab4e4148e10f9d30377d9949a7ac5f856b42348a660dd706. 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/QZHN32383245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c0cf9b898ff5585d76bfb258092b5bdf2de5c07e1ceb894b7e42462106379f. 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/QZDA42031786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05aa3dca386c84e7d5993046302c913be916d4266bbeb1a4450997148aabba6. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QZFZ32060863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0364433f20e8e477dc974be3b331f72e440c4008ec4eae6164a9612508e51f33. 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/QZFZ32060864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57791c5d56b834581aa3be7871577017d563069b03680b37ea4f0f0ad9a65c9f. 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/QZDA42037824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9e4b4b13dd5c7c3337a4bfc5bcfa6c5c9fd5698ef6bb7aa14e1f7cc96299ba. 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/QZFZ32060867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4517d49aa3cc77f22b8a5f5ebdf58e24b4469adc14b5a75843cb9338ce1d69ff. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADF1725209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d50667c120c0d483780a527f404e6bb4f3d74ae75728bf7733927114777a1b7. 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/TCADF1725211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1c89d67151358f596c42477023280e090ad762f0be9663d86eaceaa7919c09. 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/TCADF1725212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d5210be7e223071154c78dee5185cd401d242a0e503c7fe3da14b4db086770. 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/TCADF1725213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48da453c058254f3f42b67c54f57bddfa680d8c6f7f5af597e82caecda750bf4. 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/TCADF1725214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d039ce5f797e69c683973f976727da467a7844f7741a77302f675ab97d500bb. 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/TCADF1725215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f7fe3ded08bd53cd65e73e1d145eb3d64177fef216bc26b4e687a36f60a928. 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/TCADF1725216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8bb0b3e965fed79ad3c0d1cfb8981cb73315350c30f166bace25a30b3bf6a4. 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/TCADF1725217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f84101120cb967c4a71d6dd006bb5f1f8a6d0acea5a5ce55fcc72ff70581194. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADF1725218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7097eeb65519884df75c0f25eb47f6e28571cd78898d9ab765d206c615190c13. 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/QZPLR2264817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df4446dc21c892a7725014efa94da2a0d6d14f8222e610da506a75fb31f30a4. 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/TCADQ1823802.
Stone Behind My Ribs (Ethan C. Davis Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f55e1b075a0d5fb3c24c94c8566a048de2edfb109f59d2c80e5fc3fe89e22b6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM72023971.