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 0x7ed81dfbf828ec059ee4771374e04d3f9181ed324dd8ab85cdf38f895ece08db. 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/69822cd4-f424-4dab-b9a4-499b10a938e7.json and https://artists.proofprofile.net/proofs/artist/69822cd4-f424-4dab-b9a4-499b10a938e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gates of Ishtar (Equinox Remix by Anton Newcombe)
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 0x5b02b377f4f2be5693077601a109957c6d47ecc8bba6e374e0d78e33047be989. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US3JJ1701504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f9d21faa9a4d9fa7c012f796929f4e3e8fc5dd903bbee6820ff03aae27fe9d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US3JJ1701505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7692f5ecd0056fa4ffda14d05c67711e7bc3e421379bb95aa9f19a8a8d2fb844. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/US3JJ1701506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e8aaac2248aceca00bd5e784e606e5d242be3e3a4c284c3285dbc384f3f8d1. 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/US3JJ1701507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee570fcf7f06b7d85bfe873e90fb2dfb34052baaf93c1647796654470aca65b8. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/US3JJ1701508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cbd072bbdb54891c27dd32b0887772795265745178b471af3bf60a5531fc43. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/US3JJ1701509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3c8ace2fcf7257357b940f0306fd495c2bb4d749f46ec4f6718c3962657cd9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US3JJ1701511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a122c754cfca8d777a55cf201f3ebd1997535c0ebecab69e6d0c3a1dfb71288. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USQ4E1904697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1e91b495a7b500dcc624dbda22df18bb87830e90265150a5bbd135ef18f84c. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USQ4E1904705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113eeb9434cc2e74c92679069200a609933dced33944c8432ab6f765d70caaf4. 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/USQ4E1904709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d9a7142daa03967323ee7ee542cd6bb061484958ca849555c0f313f17da766. 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/US5NR2023601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897f4ebac9f4db215cfbd215b7f7b9695c60d3725cc913ac94c03329ff355df6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/US5NR2023603.
Only Lovers Left Alive (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49613579d369ffa0f5a0e9b6661ec1b4f132fcca633eabbf997bae2cd0de2e2. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/US5BR2331601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cb776daf113e209b5fbdd5b4d7942e9b6f7ffaa924897da22764d81697d066. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/US5BR2331603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988774aa5d1ef55fbfad03f3390a35537538c2e1cf8bc5a806481c73fd3ef5a7. 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/US5BR2331604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d07a94ad64d3d1516ff59db08533ebc1d3f06fb9c665b1af2b9acbfadc6989. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/US5BR2331605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053c9ba9c1cbd48dcd1be9a1face5383328e9ee96855f0c32867cda8df68b50e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US5NR2434101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8190bb3e38f4d3c5e79ed13108792002e00b1af2d42985b9647d814bf7fcda4. 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/GBLAZ2302081.