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 0xdade57fca51c77e8072058fd5ac89f4ab8443f0c0ca50aa0ecd7867e9034175b. Chain 2 (Bitcoin): anchored in block 953950 (2026-06-16T13:35:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24a7e4d1-f8c8-4f5c-bcd6-31e60c474b6d.json and https://artists.proofprofile.net/proofs/artist/24a7e4d1-f8c8-4f5c-bcd6-31e60c474b6d.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 0x81d2c920fccb9e3c72e929249dff6a431c7e2bf3e2ad20a4bb546dbb9897aed9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT5M42527743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825d130986e5382f3523bf3e1f2d40529b4ef80bf6dee1e9db311262cb83ac2c. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QT5M52568087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ea026aa0c76324e2b5938789b2ae4c554c3d9461aaf69dc687c99196739add. 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/QT5M52597081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf43c8adbbb601cd596bdb39ff310df0cc68a4ebfbbb7f9afea7c36ae0d261c2. 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/QT5M52554534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e410558f4226e1391f7bf5b4e1f1d8d5bfffedbda23373d9c79b8ddf28d61e2. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QT5M52541817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d3d9eb394d10093cea913573035ad2e752a49c2b12c51b24860574ce50c510. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QT5M52572062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bf5b9d2aa268bf074915749cbd5305f8ecbb06e368117ee6afa7ac0f024c06. 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/QT5M52553960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f3b926c120201be3ef7026df4a648494751817b93ca2deaadde254c62217bf. 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/QT5M52594693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc96cffac5a39d917e5e5791871e5e88bee9eaf4a61beaa37eab36bcface0a9. 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/QT5M52521736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8335da1cdd6b1a5999b96314ef69618db93ae1c94517d4b809b1b60a76c3b13. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT5M52548293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f41e1c6503213905f26835522d50e953ad6ec7de2dd625654287fd2fa41710. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT5M52524415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020b1ce86de22e558493cc77a3bcf672208a50b09be8a43bc33054bdb6a06127. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT5M52567478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cbbc2a526019b7b35d3335dd958c8ab3dc0545eaf8b4e30271a4b1c7ce2501. 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/QT5M52593265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc150f7f974b2bda84f49fc2188d11a723fb048634c5ee037924d29f032eeb572. 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/QT5M52585316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97591401046676a0b9f300f2703c77055cad0af5390c1dfb51bf32de940f5e3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QT5M52556554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60022ac9245112f89907b38cfbed829dab4efec0af7d0b97f09c19b3b65f868. 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/QT5M52501507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65601d9631b55673e93b47181385cbe6d243da71bd5440de021c111bb214655. 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/QT5M52513623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee31a429a9d2a1f6a763d62fed61e68cea2b3683a7aba70e6519e4b30588569. 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/QT5M52588370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bf6af9f6099af1f8374ed551d1d32e2c3a23a174e4b100707e5402d3763f72. 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/QT5M52537276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67946821da9b78cc6b22f629179b0e3ac286d3e83aa55e4ed0da522ca54a7ae. 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/QT5M52594041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22414719cbbbcbae22c5eacb4759775cb764d0544010923daaf76527e63787c0. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QT5M52577809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae02412e66bd64ae17f4ac4c7a36067c439348c20874114484c584e058d7b836. 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/QT5M52586961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fdc7beb72e6c1fa0bc9e2f4f8ee0dd6265bee8ba161856e5acbd79299a185a. 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/QT5M52553293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b85d7b66bb2f9fc871172ee05b75f9886b71047800275c117c72f82895d6b5a. 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/QT5M62532656.