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 0x78047dc5c55bb34cf56d28a22ea8afeefbe9f66024a3a068770d250f6d679b44. 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/182c6cb3-3489-4e3b-abbf-7382884f86de.json and https://artists.proofprofile.net/proofs/artist/182c6cb3-3489-4e3b-abbf-7382884f86de.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 0xb10272ce102264083af7cc48f6ab91c2fd1beb5fe2bca4a5722f6c5f597136b9. 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/TCAGD2281731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d7751a3013c527aaef3212e62ddf4847acdb704666a8674e95da5f88c532ba. 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/TCAGD2297667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4ebd2d9a85bbde3fcfb7e42290ea333f477be0363c2671d9a83bbc4324062e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAGD2297671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c03c1a3bf8ceeb617470eb63faa31dc874c4fbe06fd3da33e39f732b005371. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAGD2297673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d00707b6f87a9af80dcaf1e5fd207c6136eb691c6a6636cae4dc15dee4b0e1d. 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/TCAGD2297678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24295a732e6db58874cc51caec935de3b2ad9ea5f0c7ea8da8c78a696696654e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:10:02Z), 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/TCAGD2297679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa438696f1afa73b65b8ac56c1d3879f5f1d9aeffcd1954bba9b6d9bed4b9b553. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAGD2297681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89cb4b0c0550b61390a4ad35161768e15d782aad80cc0d3018ff039159e64fe. 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/TCAGD2297686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf529b23fc37e85620c260d137d9ebc732c9a54a51f58a9e02b92da101a0aeb4a. 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/TCAGD2297687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cee8bb7047c7d3150df08e42a8cc44ac51d5ccbc0b49ed7ca75a138cbbdcc48. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:21:10Z), 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/TCAGD2297690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8197071e81cbe82d2279ed118ace11e7d08e7d4d8520c1e3d2e953b67d93d2db. 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/TCAGD2297695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa843f7927a891019578e4e79a4ad1c18145dbb1dcd663cae636bf7a4b7eb570f. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:36Z), 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/TCAGD2297697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfbc733d4275ed37264a9ff80e15cbe7e4044fdaf5f30705b415df380e0e228. 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/TCAGD2297698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74afa696cdb3b36cbdf612210d55418186b60b6dfe874e567b4e8646e404080. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAGD2297699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87537ee4cc7f213d3afea52cb65d31e6693044a141de5560012cf2a09406b3f5. 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/TCAGD2297701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cfb53150df4338233afd9159b2945a0bf7f4ffeabc093639bd5b13b6c1abb5. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAGD2297707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db2981934627e5916f43cabed9a0a2c430068835795d76b5f71e105f6315e48. 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/TCAGD2297710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dfd029a7140dfcec765216be60d63aeb0c52b7630ab1aee36a53514924bc5f. 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/TCAGD2297712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe436e49a44c2496201e61cde4ad58192698e4732fe4cdbd8f7583ad18fe265f7. 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/TCAGD2297717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956ef669e3d3ecea4d3a3d25b427294e24f2bb3ac741264c6ae45533b8736d1c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:06:01Z), 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/TCAGD2297722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6950cfd04596d6ab22175207e0f6b92a8156daf1afa510842625316f25857ee9. 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/QZMEP2242213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2408197bea71b55e74cd3e8ca8c3327483dac89860bd7e9173dd210064233cf3. 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/QZMEP2242214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccddae55e5e64c39bace7b510f493ae8c832ec45776f1bc2c318553e074b532. 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/QZMEP2242218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806777e5b3d97569ff07bfaa893e6d2a96f662b8bbb4abd6923d16e98ee2991e. 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/QZMEP2242219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76db27ba4c7645bd92146c94c8ad98a767133374c20325a7b11fac7da6ba615. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZMEP2242220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fd4cd5ab546f437e789e15408e6d229fe3ade3fdead62589308758ea883236. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:45Z), 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/QZMEP2242221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cfc8a3cfa7e175ba6a9021d4f4228ad51797bdd117d69272ed2488a24e4fea. 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/QZMEP2242222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb58f3312dc989ad6ffe9422738d3df5e56078b8563b597b6723cd6e5f910d5. 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/QZMEP2242223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40d4ce7d156a09972567e5ddab7c69487b6c2bf21d0ee2ac519611edad8b764. 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/QZMEP2242224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d3cb9050f0019294b37df4b8ddbd3228bf1040ce80c0768ff8a44bc6af2d9a. 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/QZMEP2242225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf164eb2e1fcada2a9fde310a1befeb84db23831e519b14f9c00bb5df725b130a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:49:25Z), 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/QZYUN2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248b115d8b5350276c8154bff30a74e506feb23a247b01d46630b299e2fe6049. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZYUN2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf365340c9c308169dbdc9ea6b7a0ae8e379917113192fdfcebe1d9502dc4eb8c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWX2506793.