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 0x88bf5f1b30b203ff158cd3e13c5e2e521faa98c2295347bf9a57e88e015e204f. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/126fc53f-d08c-40c2-a168-00153122d4e1.json and https://artists.proofprofile.net/proofs/artist/126fc53f-d08c-40c2-a168-00153122d4e1.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 0xf21e1ee87654e7e35d4630b75d730d00557825ebbc6d03fe4cce7c9d3743cec6. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBSMU8738747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9379361a88ddb99e31968bfb0115bab1de00fa76b574cca20c20488c35af541. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBSMU8738748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5896833241e2b31f80d41b649a522911e610fabd2b50be1c49a6a38f929d385. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/GBSMU8738749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f394a4a97b85f6e426fc6471bfe04d6a4c42f62b6fb742ad0da9bd15be6183. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:46:45Z), 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/GBSMU8738750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6537cac8cebd04e7c95c7ef364517e2b1d51b9b2cf794862e5322745ad1d3c66. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBSMU8738751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff797f89acab7371a8ab5f15e2392b578a5f2252bddb090f917b50bf8dfa278. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU8738752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6d449b834073c64a116687ca3dfadb94e0cd906ad2932a822b263e0c7e26c3. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:49:09Z), 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/GBSMU8738753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29844dc0c11adc00ec0e82c0e932e2ef9f70ab417fdab10c1ce148dca4c01a10. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBSMU8738754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06fd4bbe4f3b301240e861165e117f31a3b6f21c01e79cdb86bbf938282da54. 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/GBSMU8738755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffe8501a674d7507413788d7d68418e8dda4b3d854a1e24c40cdff2a1bb3fae. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBSMU8738756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19260b92c069f923d8f319a55bb0a7f1a90e7e61209a5aa2b6e9eceb6481f7b2. 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/GBSMU8738798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc136ac8f71596464426dfba852a0b935566b0af6c423726235c2f863f5c5b5a. 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/GBSMU8738799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c67744154cb725d2c8086fd3db4a5107e74cb77fa55f707398146815236da88. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GBSMU8738801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9809a0c0acfc74ea08ae8f7c6c96f059700565ac27d71ac467ca5350132cdd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:47:51Z), 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/GBSMU8738803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e17fec2de7d1b1dc843231118c544c2c223a11587fe2f0bf07fdfa182393201. 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/GBSMU8738805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7eea47f0cdc46b83e2effe34246edb695ce195eae6d57283a86cfcadd843fa. 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/GBSMU8738806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ac451168038d2c4d797edf504a2ff3c481ab32822e2c8e1c09db525e14f7b4. 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/GBSMU8738807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423d0aed5ed7e5cf60c2fc3b312a20dcef3c1121156e1c2a192f5fdd6ceed02d. 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/GBSMU9063048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2f8938bdcdd9cf5b590b0456d21a008cd5e3b6a0af191792ead95eab0539c4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBSMU9063051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0337aa245bd215217a07f18c3564cdf937da841fa63b124f67530447bde85831. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:12Z), 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/GBSMU9063052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68bcf7d173dc49d729d213d923f94632d7bceb49d8262d79ce1a17557333eaf. 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/GBSMU9063053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211fa5f0cf58643d9fa6b4075b38b9d8e20b227801715078b310faf8a72afb59. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:19:57Z), 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/GBSMU9063054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883dce1af3ee0493bcd6a76cb38fa3af8d888d2f5ac05f48aa2dbbffeed2fd6f. 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/GBSMU9063055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c63a0fb75fd44a14c05d3adbeac104e25254e88813b122263d7fff2ffaac01d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:27:14Z), 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/GBSMU9063056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0756d02224277f93d065bafd13ea17acfaf1b413999cbec4fdf6d31b17488cb9. 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/GBSMU9063057.