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 0x5789061bfea3a355196a121cb84b23a442c71764bfc4b9f30dea594a67471964. 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/edd5bef9-9c87-4e6c-9c71-2e7d6e977d58.json and https://artists.proofprofile.net/proofs/artist/edd5bef9-9c87-4e6c-9c71-2e7d6e977d58.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 0xf8d5c6530c9cd0bae5418fa1ead464a01031f9e09d1600528494dfdda0e483d8. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QMFME2188228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000435709c9e9c47455e0b96b40a730bfef0fe32c457b0191611534cb16683d3. 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/QMFME2188502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9001a1c05f321c6eae9cc9808a10733e621d3ed8b495c859592832da25f0a0a7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:44:40Z), 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/QMFME2188499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc70c2a2fd1c0827a03ab21d3b51a95664eaace2584f36630b984c14b6b2c54. 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/QMFME2188501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7183f4807d00013ab50de925afa7a03f9602bb0a9f7d0bafddb4f3832e5c8800. 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/QMFMF2105040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133c860aa34f6d2672374b1945dc4f9f15db48b30c37895268a5a816221d4f7a. 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/QMFMF2105041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ec9d1844708ea632f7d4420fd3c7d33b850bd8ea1acac71d86653d91152998. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMF2107300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ec3c0dc11787062be466fccbf6b0bd4e93449191506a29cd9bfdf16d9b78e8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMDA62126604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bc6e97a833b72d8fb99d8f73cb75e537002c85e68832975e34181e071986a1. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QMDA62132709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22407f44fc9b6ed412d922ba4d2ee27c432a70879f539208894c3cfc4a8b120. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QMDA62161633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ae28b3325afaaa0018e5b7a3edee5925a88bde5a03579d197f672f68df63a3. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:02:49Z), 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/QMDA62145931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97592c961d8ae609125c4fcbae92f0118fa33e2446c28331296b7c598c9c1026. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QMDA62145933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97309ad13a989a1777a34b1281bd5abf056d4db9a62f0244c84de1408bbffa0. 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/QM4TW2221987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1242831931455a8f930c31a19dfc0cc47c1d0ab20e07fcadd1dde22d37202a76. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QM4TW2224450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7409817d058284523fed1a80c9a47750801471d1c321531babdf30ab8ac060. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QM4TW2241850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad317bad52b129fbe2b72a7393cc1f5509e639477d87b336837fe6d6d68bd23. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TW2263112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1400a852e4196b0fc1f941d937b1b9e09a51b10dcf9fc15e78fef3fdc42710d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMBZ92269204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1fda8726223ea7c63161f6edc31e16a0225e5a8ca3aa34498ed9d661c9577f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QMBZ92262872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ca2229e0e59a95ca64cd8288f8072a73536f8b20de7a8be8a58e24a6d8fb92. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:22Z), 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/QMDA62255184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a83824e15f5ee9d02cb2c4df80cf53b3fe15a7b53457dbee4833737d957978. 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/QMDA62255186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce17e5a507341392426fc8eca21570b82587e7c8ef2e15cbaa2c28c332bb3d33. 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/QMDA62255187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454b6e473fef5e1ce6055abf4a3013b3880bd200b1694532275a7ffd68fba8d0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFME2208979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388bc0512b3e41c052c12f083978ac74c4512a30cdfdb6761a7010ae0f3eb7e9. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:47:21Z), 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/QM4TX2300630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb169b848ea143b10377b8db782955692eab0e9a6e92e5f0720ee4e0076916db8. 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/QM6MZ2320834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485f2c44b2db65884afc5d19c4ed9dbe076eb09ebbbdaecc3eeadd79e2997113. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:48:39Z), 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/QM6P42317581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee7f43af2b35cd72e379f980a9127ad05a9741846c87c2ffb89406315ddd676. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6P42334050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d4c35973c5b3b188c1018c04875a147d97fb07e2a4bb9234265a4192c80958. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:17:01Z), 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/QMFME2304792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011b6f41d6ea8d49c04b40ba618d65af0daf852d1c05f32763f957df033f642d. 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/QMFME2304739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f285eb7d72477fe942dd6f40333c598a9bb7e080b16658724da4d7b98d79c32. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QMFMG2317748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83994e557b15693d9794138597c82266357e9c1c5d6c1f0089ffee3c2a3dc968. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:43Z), 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/QM4TW2430045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61ed86472e60ffd63811132dbbf92e9b16067f38eed5bd9a84666479dc890fa. 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/QM4TW2412367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdd0442b733d3f4e00e705bf0774907a523c1fba499e94182f69f740efcb25a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX2232071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb40593864b0dbffc9e2fcabc27fa4a0f4ce4ff2da54555e7c055a294779ed4. 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/QM4TX2232072.