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 0x94e23bf2c6e154600c6542c153fa1407f01e4928544ff832c0b580253cdb3998. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79d55632-ace4-462a-bddd-03a00cdd72f0.json and https://artists.proofprofile.net/proofs/artist/79d55632-ace4-462a-bddd-03a00cdd72f0.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 0xff9b68bb8fd91ec0820b59b14c49fa7e3f2c569983cc4d972b257c26753ed076. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/TCJPR2240762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae61eda4f3c776682f70068229b7057e52771d43b87cdf8611cb32afb1bd2211. 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/TCJPR2240766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca12ab1cbf8538cb4c4fead9db1d378dc8746973c7a62631e6a983d59cd78ade. 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/TCJPR2240769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f0dea75ee143cdb33aad6b30ad7acb98ffe126b8b8c96df64f52008731c73c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCJPR2240771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9b68bb8fd91ec0820b59b14c49fa7e3f2c569983cc4d972b257c26753ed076. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:12:45Z), 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/TCJPR2240762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae61eda4f3c776682f70068229b7057e52771d43b87cdf8611cb32afb1bd2211. 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/TCJPR2240766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca12ab1cbf8538cb4c4fead9db1d378dc8746973c7a62631e6a983d59cd78ade. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPR2240769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f0dea75ee143cdb33aad6b30ad7acb98ffe126b8b8c96df64f52008731c73c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPR2240771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957bf8a5a460eeb18ee14be596a010bef539f044658d2dbe707962fb2c3ef2cf. 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/TCJPR2240833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f211a91f73c693622d132634d16acf8d2824354ffc8ca612c244938893a54d0. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCJPR2240834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cb1d09ab8252633373f086e39e1dde78bc0bfd71901f7310c1fce2227c7668. 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/TCJPR2240836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f211a91f73c693622d132634d16acf8d2824354ffc8ca612c244938893a54d0. 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/TCJPR2240834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8543dbda49d529bf68fa7c5756661dc6f2b6ca4e4156930901c7384a379c5616. 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/TCJPR2240795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ede3782e864d430539b7143e2d5f07ff687036028e234863ad751015ce23b1. 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/TCJPR2240791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8543dbda49d529bf68fa7c5756661dc6f2b6ca4e4156930901c7384a379c5616. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/TCJPR2240795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0921c562b7e5310a00ea93a604eebd8e7184d477b7e196c21b798d71555d1c16. 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/TCJPS2288267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f27602fbd6883481088337933bbe01ad813a2f9e3c07ab4fe2f669f7dbabf0c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:08:10Z), 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/TCJPS2288272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ade7d083112a1a3a52cfa899ee7a2bae109220b61d3ca26dda72fb89428701. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPS2288277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65609605aa38e18599b9034600303d105c2a339673a56b527ddda27b9e661a8e. 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/TCJPS2288281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dd01df0b2d4c6055363c285c17effcd05e058feabde31d797cfd1160d84622. 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/TCJPS2288283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f913d8c6426fe2c3bc01831ae4a0df8cce74dadf4d3da6e4d0c3f989d5fd01. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:46:02Z), 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/TCJPS2288296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f27602fbd6883481088337933bbe01ad813a2f9e3c07ab4fe2f669f7dbabf0c. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCJPS2288272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ade7d083112a1a3a52cfa899ee7a2bae109220b61d3ca26dda72fb89428701. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPS2288277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65609605aa38e18599b9034600303d105c2a339673a56b527ddda27b9e661a8e. 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/TCJPS2288281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dd01df0b2d4c6055363c285c17effcd05e058feabde31d797cfd1160d84622. 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/TCJPS2288283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838b8a685ecc0be52150237667d0f1d5e7476b755fde16731931a3ba643e7060. 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/TCJPS2288287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504bf98f71cf326f1c3459ec16aec2ffc9ced68cbff14b23b5a30605c2e594fd. 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/TCJPS2288289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f913d8c6426fe2c3bc01831ae4a0df8cce74dadf4d3da6e4d0c3f989d5fd01. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPS2288296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b9fd2ead4fa8fd553775e19bd441bc1ab1a0551794099df75ffec09a5e92f2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TCJPS2288299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d104c67555c1c4c2e789fc43ff383c965cd0543ada096a992ae1af22fbb338. 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/JPQ322400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcba720797b95ea0b0d9b4f6e14dfe43588fab223a4afdd798f73a8df6facb1e. 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/JPQ322400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d104c67555c1c4c2e789fc43ff383c965cd0543ada096a992ae1af22fbb338. 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/JPQ322400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62542eabafa7066c8fe816671c4fe3ad96c252061554c4e6c0de05afa341826a. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/JPQ322400194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d2132cb52640adb1c1a273f108e0968deeb932443c3fbdacbaaebf77280912. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPQ322500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b9b3ff7332e41851e69f1767d016238aef39c33091ae5a9ee705a9dd49fe08. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPQ322500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2c4c91da7bd52481b210b88ffdde07c5d21942b0f9063bcc73107d8a3bf9b2. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/JPQ322500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12034831b4cd156f0d586b6d98797b4d886db6367e6718b8720848a5ccc81d77. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:20Z), 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/JPQ322500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a429cb9ec13d4d8e1cb769230f4de310a291ba941c89a30d08d7710ea4ac1d6. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:40Z), 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/JPQ322500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf0d18c96aa07abac764e48f63e369b9874871d43aa0de191d3485c70fc5e4c. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:28:11Z), 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/JPQ322500290.