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 0x601189c88e942b6cda7f948dee59bea2b0112cd2be0ec8b86f6ec843631ca1ca. 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/65de8e10-f728-4411-9821-77a2c847a856.json and https://artists.proofprofile.net/proofs/artist/65de8e10-f728-4411-9821-77a2c847a856.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 0x9d3a4a07ec1180a8418159b92d9bfba0ab53d39ec051cf5a9c51205568d3a048. 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/US3DF2092464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b76723bc4fcf8067a69e10d2b1087859835169e5251c7e7b08c80e27cd27519. 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/US3DF2079860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f65ee390807afd86cebe81f861a34c7226fb8e16147e59c959c9c743546bef. 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/US3DF2092466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4f23cede99649de464fd378b10748956d96f2b317b6d84e0101029269719e1. 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/US3DF2092467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2074a3ff44cf695fd42939d208b1fb47527e1e77e2703109724475b0d3bfe86c. 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/US3DF2092468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2929f822b6ef82b722988482e9d15a96cea71c1bd48702407cd0d9ad9379b13d. 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/US3DF2092469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77af1d5e27548eaa9aa3a55b53483389575054f6b9fbc74993dd6908b7e35060. 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/US3DF2092470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd560f1d9f0c18b8b73d7f7ae452eb8bf66e3d1ab8a4e9d59e7080f79b707ba. 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/US3DF2092471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec94277632dbf2d48f1dfa739cc97cf82592e8ceac2692a23859d1e773f953ed. 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/US3DF2092472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3054a4ec690ee4d6b7824345e282838253941f5096a021ad3a12f66b9b125c92. 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/US3DF2092473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7bc429002c6e87eba9130d6490da885b082371faeb63279a5cda7d4fe129f4. 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/GBKQU2460054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1797c57d22e588927008f13162db7ae53fd1820dc6eaaf586b0894f65c77563. 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/GBKQU2429156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3bbab64d85971711fbb127b9226b0ce3d471b21e8dc3468d80c857a544c7e3. 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/GBKQU2429157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cb0d53cecaa2e7932b68f27cb2cb313d8670a312992c18d3f2977a4bcfb680. 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/QZTB32389626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1e5dbe7f5b473d6a7600acd7f8bd2157dce6e0e84d34cc9907680d46851209. 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/QZTB32389627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaf89e0b24fcb9442ed3405bb79bd4dd79842ea48bbb603e194da6305a67268. 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/CA5KR2329756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa062abc91259a1eec4ce105a10df65430db797a30544e20f80f8b318e72ca3f1. 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/CA5KR2329757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4b2c51bc7c5ba5217e889fdabacafb4e7a9aba01d26e1b4901169cba4901cd. 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/CA5KR2329758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955180e83a2c49c677d8bd6a44607fd3a92611211968486e51136cf4bf465949. 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/CA5KR2329759.
Absolutely Energy! Workout Selections 036
Nothing But... Hard Techno Essentials, Vol. 22
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ee624e4d4bf61c2ca53f59c2572d135b42f85b3208b3ce2ca05caa34c33acc. 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/DE1NK2400001.