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 0x47be38be60a2ce3d3109d7eb4f31650ab0b9d1b424d6695a0555383354edbb60. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56f59136-52c6-443b-8449-5032a27aa597.json and https://artists.proofprofile.net/proofs/artist/56f59136-52c6-443b-8449-5032a27aa597.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 0xaecf2c679eb0d14cfa8f8af5fab7552292864dc1784175d9a3dc6a598260dfa8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBSMU4907007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684e5da76913c603e434976e01eb7cc8e3ca6eb727598821d209c88eaea93992. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBSMU5067336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8820b8e1ab147d39276fb939a5999be4d8bfd88bc0fe9f1df81dba71762592b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBSMU5546446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9149e6673c8c10e65cf9e88ab6f79faff10a693ddadff57aeae8ae577ca7bf1. 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/GBSMU5970352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b53b357e1b0e815d76b9ab50703850c6b9d40b3df93ad1cae78ca36fdb45dc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMEP2036348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7c23224f0c9d094ef4a4b35cfb767e7819f92d29b72a6c2ead67ce68f883c1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZMEP2033064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d7be91b2ea2675eb1de281ba61c1c59963ed575f476fc114f92d9b56ad94a1. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:17:59Z), 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/QZK6J2052203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2297e61385e3ed4a9a2bffa024015a90b2314a0d762e8953cdd6865483ccba6b. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:06:14Z), 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/QZES82125033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bbbdc24cf0f4a3d02d6ad0a439fd71649674b776956e5a52028c1fdd327d35. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZK6M2185797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaf21e44ab06578931ec972e479473847286ad9fc66597df8f807d9b4543c15. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6M2185798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a0071d3f68decc40c5d1bc3e5f4bb99d0cc32f61a1bb43f43dd22fa00a15fe. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZK6M2185801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4763a30dc6a9ac731a946ecda4a92e3b3bdbcfd79975df84a2922ffe09016ae. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6M2185802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56187509cfc7c4669d79b9dc2657406cbbf6e2385875333c56078ba39094bd62. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZK6M2185805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049f074a2b0cc63a2de8e0c95c79d33b4a17bf581ada12e963f228a9b3ce5031. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTVM2322542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab626e949285df6c4bcd81443faf4b73561db60849fb593fd778ac3626ad6e8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNJV2515666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9a8652a156d4af322b48f946f06f60e22843ac56fb221a5232dc9b4d4de6be. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNJW2544566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706058bcdc14e99507f5eed1f88c992efe647744fb17c676a9ca73ae35584b6a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:26:51Z), 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/QZNJX2569563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359c1dfcaa0545d24cd4e20dc6e87aa01c93b4dbc14ab55ca50c07c531803bd8. 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/ES69S1500282.