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 0x4a6bc202dda42ee26132eb90d2402f3316ac186c22614fcbe0cdeaf76f93392d. 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/5720b4d4-b526-49f4-8796-cab6182f733b.json and https://artists.proofprofile.net/proofs/artist/5720b4d4-b526-49f4-8796-cab6182f733b.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 0xe5d25ced5ed661ca1f842bcf41021134f0297272201b2e2731c57ba46c46b15c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ISV982316101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84aa2849748c90c3128575b5d9df816ef0d50132d0e952cd8d860402ab15e35. 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/ISV442323401.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5796488c4495c47c1f79260a41265a1134f757d274079d8dba43e309358b863. 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/ISV442497103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f5fa47dfafae4e27167a889e6421b26fa07fa62d1eb2f237aa08c642f7753c. 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/ISV442497104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9d92775bfc59144232e3981c298d2222b5a20e56d6b49b13480c648237cc57. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/ISV442497106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6f0c9c86bf88bda7b29fcd9956a4adc66d6b2ce72d001147a635d3d8ac8e76. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ISV442497107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a0677bb73237ae2fcc5631aa633e12c55f025baf201b4508f956208a560d89. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:44:06Z), 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/ISV442497108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ef2934c8201368daf534311d8ed9e7c84423b314a9d01363e694cc1373b12a. 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/ISV442497109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c046a8cd9286abb2f054c49c4d89ad200b576a90478ee897e1a15ed4f58669. 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/ISV442497110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724aea270481e1ea431067bb28c92a82f2118be1742f7d8a4774047f773fcf63. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:10:12Z), 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/ISV442497111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5e46a493f4815c6559ff4fe02e0598b81c40cc23d9a8a8c4aa20d104883823. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/ISV442497112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4d397dbf9fe2536c8c9a5b919460670a0dce2f0779428e5075f8e9224ca2f4. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/ISV442497113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4880bd84c9e83b599555977346f6253e8d72b3bf92b9c892613f270b0ed13ea. 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/ISV442497114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83214d6b23e8927fb9fdc698a15fa5e57def4a16a3fa20ff704e80dd8dfe1886. 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/ISV442497115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb852bddb713dc1ee48c046910ddf23c339992b1281241e87504b6988b9e3e151. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/ISV442497116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5033089f4bc7f59bdf6d4e08ec86b1c854ce8b1e9d6db7b58f21ac19677c9bad. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:53:35Z), 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/ISV442312601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abd27b9774b3905a49c6775b941819f5f834b8dc2a5a962a9a592d84be82c17. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/ISV442497117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5475419adcfd6d38ee32fb32e64b4eba1c442768fa277cec800af8a66858200. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:02:11Z), 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/ISV442497118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84aa2849748c90c3128575b5d9df816ef0d50132d0e952cd8d860402ab15e35. 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/ISV442323401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381e65f5ed50808008fd4aff0e365d4d7ca28f7314a758ca3ea0b646de159ec4. 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/ISV442497120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9a52667da992662cfb12c3a9c6b192a58015cf5cacbb5d457e2f857d2ee1e1. 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/ISV442497121.