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 0x478d952f40d3df7cd5e693d9859cd3b7eb7fe517eda90ca44a618d35180f430e. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/591fcfa8-d211-4354-bdfd-38f43e835195.json and https://artists.proofprofile.net/proofs/artist/591fcfa8-d211-4354-bdfd-38f43e835195.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 0x9e7bc495415d78fb8e672e56d46414781b4a355121938b8947c1b0ac4324c1c3. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZHN82564673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4d2f10b595307a7e513e28364973cfe5f9c5421de83cee510c5040d9dc8dd3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:35:45Z), 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/QZK6Q2570345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cab216cd56a3ba5a4b2f9b343543b8b6eb869116b2ae1b4975eb4a983d74f8. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:46:43Z), 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/QZK6K2509964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecc2f11ae41f86a493ebbb8890d93445c269ced770a92039af08278d50f82f9. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZNWR2511809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce3690edf7e9d469b5539c420a3801861d53b2cd47fc53f491e6ff2a6202468. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:08:35Z), 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/QZNWR2511810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4807e55c2bc07bd131eaacf90262e9729f2ec9b65df22c2ca891cfddc049bbb9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZNWR2511811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e40bad556ba39b8400f45adfd73926023e466735914e963e137a8fb29c475c7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWR2511812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb999611151157a732c76b3de789dab8986e91bbd55d84fb550b3046e0fbee6f4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWR2511813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73514a9ea3891bbada85968b6c7860043b1635aa3e53732da43daaff388e0f01. 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/QZNWR2511814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a323968e540aff7230190c8f24b3a21bff0cd2b43db84869e580950e75a7b21. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:45Z), 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/QZNWR2511815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edcc2e264c6f53a690e8de1ce5356d02a16a0d794f03d0cf9e48146d0f2894b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNWR2511816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe138057461d09636a44c57fa3f496f67aad81ad07df4d3f8cb254eea3e477c7. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:34:05Z), 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/QZNWR2511817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3886b9e7d47524d1843bddd90e574279f254287d7d0f666e3867497ce2cecb0a. 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/QZTB22506982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3a551955ab6dfadb904637f34de4fa3f15d7e8c117e76b6cd5334673cb27e6. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZTB42592004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae822557c6be9a5f077c82d3d3b27124853a8377c22ead38ce5e2c32270e66e6. 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/QZWFW2587807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f820aef84b0fbe4c8e57a41d713b11ec43d7c1f5d6c6a68c3d5474dc8cb483. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZWFQ2553916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8169b143b0ab12129d8b9d1b8036db50b38ca1d1d53c92f43123a81fc9633bb8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZWFW2587808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64263ec9b3b824db51f1969e07bddfb66b74af394b90382425c7e6c07000db19. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:28:15Z), 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/QZWFW2587809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a28947118c8dc2bdd96d50d5d142a7828bdd3397f9ea776f789e7c8679ce697. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:09:31Z), 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/QZWFW2587811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf7c1d0ad09878eb8c94f32ef6bb3d1b8117e5efae5fd2d70dc105ccf236c6a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:04:40Z), 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/QT6E72500842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd627b4a3c5b9f49955953245ab8debb66cbf8e6e4dacfd010934e89abdd03923. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QT6EC2570286.