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 0xe88cb89cbd7ed1b7ccf23bdd379429b56accaedab59115ab191a201a7ebb3993. 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/64804608-ae89-454c-b467-392901e24174.json and https://artists.proofprofile.net/proofs/artist/64804608-ae89-454c-b467-392901e24174.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 0x1ff3bda85366ff233473242cb6ac7eae2420aba0b5faa321ee0b7931692eb203. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ARF030002062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff05a9b528026249c4c560a0eb063745822558c93a92298d820f4972fb3eaa2f. 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/ARF030002071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480ade33090195ffbef43dd4cfc8feddd05b6444a5b40303b798b80b58961d50. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:08:11Z), 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/ARF030002072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4daa7302c4ad618aca494bcea52c2da766ff3a2881497d880a7b9f4b2a899f3. 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/ARF030102165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b8bb6f2cd98867b1755016859c887f0a25abb693bceddc4700ee3c76bca032. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ARF730300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb97650a24573709a369a95ee2cafb10f4bd5a0ef319efd2e3f7f0c071abf46. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ARF030500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4560a2b240672aeb7698aa1e55ddb0ff6848dc474a523dc6f471a76d475bd94. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:25:02Z), 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/ARF030500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294059ef9dac0a2c964dbcb0f148a3cffa7515e382ee96a54200e2ff962113cd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ARF030500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cef85e7be23a38d9002e1a828ca109a28ae0c502207088e5275a596b0b371ef. 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/ARF030500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ab04f54d6dc5d169f2f8e5348bae9179353dcb437bc3b67c930ec75b44087d. 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/ARFSB0701018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcbb678a781bce2f853047467ddce54697fc03ab3bbad922eb462b1d048eded. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ARF030102163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9783718d374dc621c6be26e867f4869be853cf6680d01e51b4adaf5692de552d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ARF730300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac2aaa49b246ccf30237411e79e2e598060b0e0f9c2e16ab156a640f797f82c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:19:20Z), 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/ARF030002070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd781a8fa462ac36c5ac6c0a0df102d6d17021c9887f9be81c17c0ffa440cdc9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ARF030102157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36a01c29d258a110e10a33652b33af897a0a00f2be28a19d5c5e7f7d20b072c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ARF730400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedccb3207aa73ed84adad38df20f433c8603252441abee0704719e30638ab53. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ARF030500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f9170567d9d504fbe3723abc12bb351c513e0db565dd85512bc28e3dda76ca. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ARF030200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de4d55ee65e74141bf175cc8eb424a56007d14419db1ef48913177388a0e6db. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ARF030102156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f579946ff8d7c630df00a06b638a99364f554b42e73ce5149e693812adf3755. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ARF030500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7089387859180db5d852c9b1a35d06e5a4e19c181882aaa784164165041c90. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:52:27Z), 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/ARF030102166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9f89f21dff9314db2071373ed5a248504ff24add52c5435ba1b1d38499c145. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:11:08Z), 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/ARF730300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7feb8b667f818f2d7c29a648ef3231f723b4b239216a5cbcfba7004263e8ea. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ARF030200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7b471cb56b9a22de1f746bb1acb67b6e685dd765f2a4eb3b668fefb8f4b590. 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/ARA111100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793e28fe939b481af6c1c4981348d935d904763e0a1db639bcd453a9752332b9. 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/ARA111100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45927d466da1bd1098aaee3bf41f8de87042cfdc69e5a036405569b602b39fe6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARA431400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52acae879392b440e38ae669ce959738be987a564bde1d7dcf7f9e7107dc54d0. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ARSQE1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6649a7fbee427d56afaa8338308949f0e6072eb663efd48b6e5d4cc522a4cff. 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/ARSQE1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1061063c90ddb4470fd5d343dbc77164111c9202d21272ac34fe88b56062b2d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARSQE1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a586fc293eb497526522b5ef3679b096de07dc58bc75aea5813e7d94a9599c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:12:27Z), 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/ARSQE1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb603be8ba378181406207a62b6c694954cb1fea91c33e3f6341d703b7bb46b01. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ARSQE1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0509d02f64286734e313722626abd51aa544c0af1e7718a5ad1631b6176b325b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ARSQE1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b6aa0435ecd6dfeb146576f9efa3461bc75a47d92f14ee7a8fbcc79613a642. 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/ARSQE2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2365f15cdf5a4e4e4a42c7c6639442e1ce35aba68954c89ac3d7557e14e89b4f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:35:29Z), 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/ARSQE2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb424b70b12594fcb87cab3056360e3e16ef5b74d97ad3fc0874a570d228e7d0. 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/ARSQE2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472a4eb1179f369c5f322a2aae8b0d019f659279dd7038f8307e4a7cd44d3764. 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/ARSQE2300005.