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 0x79c582de50bf0f83dad7ce588fc6a44ab5a6ea9dc7f3bed417a0b97dbd2d6015. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2385cec7-44d4-42b7-9a22-87208afb5268.json and https://artists.proofprofile.net/proofs/artist/2385cec7-44d4-42b7-9a22-87208afb5268.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 0x8a7193af75ceb998abcbff4bf361db91fad6743edc736aea9ee33145b6f683e0. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/MYIT11500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209ad4941037263f5071a4ac842a19d69fb05ef57854797f939a8db9e7c228bb. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/MYIT11500138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5451a6a17125ac2785e9b05a66b0cf418af0733668e06cc65b1a0e0efde19ac4. 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/MYIT11500139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fada2d3962ba1b933b5415e2b576511c06c04e4eae7f211154833540e18a1b2. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/MYIT11500140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04b2e0dc6a989ced85799d2dc379c4d762013427d22c18152f74bd4d066cff6. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/MYIT11500147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e8f8cff6ca1d2d523c70b416603f6b3b61e02e2c4d24e96fecbad9d67c6aa5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MYIT11500155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9b9b25c3946f34bdafeaa059443a83712a9f13c773fb33aefa539e43add5ea. 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/USJ3V1486074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc6d67f5a7555387cf07b3a40611535bda651388fc79f36a51565ce40da5e5e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:08Z), 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/MYNJ31910001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d694c6cebaf45a444cb83b8f405eb1986c3e44eed72ff66fb57d622b712619d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:35:19Z), 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/MYNJ31910002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bb4caaafe5a0a681ba011c92a49a7ea664034cfbe02c990dc45e37f8c5b991. 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/MYIT11500321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270ab5155694d67a2164a441775e8ce1552c9a5ea59acfde543c95880b79076a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MYIT12300230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f4fd6b38e7ae78af5a3039ef56a4122adf6bebd62754e585e47bd323a12f8e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MYIT11500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41885324766250f4f3597c4b0548401a144470c5206f9cebabc2762fdb404a8. 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/MYIT11500293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f4fd6b38e7ae78af5a3039ef56a4122adf6bebd62754e585e47bd323a12f8e. 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/MYIT11500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf49c2436487b0932bc9e1ff792ef2a5787e51cd5afd732bc310f3491884274b. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/MYIT11500151.
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 0x602d62cdf5d2f22bbf5e41ba749d180f5df1d4320e5656f46899c6d559a35b76. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/MYIT12300231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0abd0d773f34c3de4d9e9b78d7c1165394c1c84bcfee0aaa4217366bc678b5. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/MYIT12300233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e76e4f36e76ae42c96400d3d8514666043eda1a1d7f5955ada75da201d4291. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/MYIT12300241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368bd80a6f5adaf95ea14b8016d6af0b6f91f8882661eff0afabcd42a93fd0d5. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/MYIT12300242.