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 0x33805fd198ec1c5cc9705b4caa73c6feb73406751c50976077325cee6b434057. 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/cdd28ab6-dca1-4fc7-9bbd-e2653c17fd33.json and https://artists.proofprofile.net/proofs/artist/cdd28ab6-dca1-4fc7-9bbd-e2653c17fd33.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 0x6a650ac0365651b172aebac7c40055c6e8e9567da5e128fa1c800f171449da0b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:35:39Z), 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/GX38U2228881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355eafde1cad44eb50e8746f6b5e4723abef6df4cf0673469dd6d53f1c647e76. 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/GX38U2287095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1841db252519c3678dc5b7838cc07f28a42067da79c35001886d4751a40f0c40. 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/GX38U2287097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe857b49d47699ed86cbaaec5b452990dae23eeb4a6130d2e5b404eb7519c83f5. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GX38U2287098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca56f6f353c09634390f971bee561cf18e1be4a4dc35ea7f5aa991b126e4312. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:42:21Z), 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/TCAGM2256149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ee8112bc0e22dcc6f4cb080d5dcbb943dd0337d61bd58e8839196c7b66e120. 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/TCAGM2256160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2786a4ff16fa3f68a82cc0fb9e8e6cd30e85d28817103cf040e446d2c73355e0. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/TCAGM2256162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13966b2fe99d7a3117bb7613e1ba341e25ebb67efe0182ae09338761a612452. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:35:52Z), 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/TCAGM2256434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855a894ea985bce41f554c86bea5883086e74f7e24b9e3873f4ac7793b633506. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:03:42Z), 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/TCAGM2256438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b33a8576bf6a0b14bbf707c749cb1b8f0664afa8bcf53ae5e45b7a0b01311d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:39:38Z), 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/TCAGM2256164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc0155d7af232141861bcd73828b879c1037eeea79a5cc8b8ae47850935738b. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCAGM2256144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efdbc2f4d06243fd968ee3c6791fb2f69210bf3e391ecaf2dcbda6adc19dd18. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAGM2256157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4560aef2670edcd5bbab32b16cee9c47dc950095a561453d396399a4405532f8. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAGT2376771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6e3697ff5675d6c8d10dcb7da5a90d8581734aa3d52b695377ac468b296712. 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/TCAGT2376780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e0814b70ed748714d5277e25d6b8815494bb67ecf020dc9f6f67b71b92d19c. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:06:38Z), 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/TCAGT2376786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5ccc8e1c1cad37b3c707df255802cb79f78399b539a1699b3b306231c9daaa. 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/TCAHH2311122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5181d4854d01ba3fbea5c015cf7eecbdae9cfcbe8770b2f9c26223a671694965. 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/TCAHX2408636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f5965a4b7eb1db53fc5759bf267dead5a32d2422ec3764ebb077509f5d0c66. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAIA2486995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb038d245708373f1653992597205f8df7da11638f4505c2c98875f64aea385. 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/TCAIP2455271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4571d3669f91cb9305791bdabb821f5dc818b4b3066c3a2394ac58fe0f34ec2d. 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/TCAIO2455275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd569d5962e24dcdca4744dd3fcc05dea9d62a29b5d17b395551b5c9e5d0f2263. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAIP2455288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfad2529d4f48e785cc3c1351a003fe32a083273b31a53407ee7b1c3f79c544a. 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/TCAJG2544462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee5a718cde5963eaf350780a9a1c1560a41548c54fa8a3c4681adb7d551f999. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:54:47Z), 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/TCAJG2544477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4d59d4b29bbc9a5dd600e95e04d6aec51f58ee25929d2ae4a2902fc825852a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TCAJG2544485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2a6bdeb104ce7ce12aa5538febdb475b9a47e98c1b5e6caa48d749899829a4. 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/TCAJG2544489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93455419560f9235af8b03167792c98999b5d93169f8bfa6e588bc0dbbef3b4a. 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/TCAJG2544495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfc28f95525ebbbf9243d228b54656e53606583a8eaa5965ab78caf96101104. 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/TCAJG2544499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b92740fa8670e8c1aed50286b1f18cc872108266e6478ff57cc61ebf5826d9. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/TCAJG2544504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bca7478f9e6e671019fc66cd5ee71a611ec96f79fd4f801e95ea9b8d204f1c. 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/TCAJU2574210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50a1375761dd605db09d32f1ec3bc20ccca804f0f23e24f03f8892785ca6b3f. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAJU2574215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b00e13a841f4124222f9f72887f9ea8e8c80b5e6aef21aa5ff05ba4c0ca248. 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/TCAJU2574229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36226fd52addcaaa02f0c1688af7c70fe2b3daaab2f8ceb5d76e7d937a60c47. 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/TCAJU2574236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2629c47a3afac062ac574fc832814bf039e4a1bf9e8dd4cbbf1daadb466f9404. 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/TCAJT2574253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342f466a295e56b81c11229c2a5b883514f54eccbe674913d3a5ea1e8583fe63. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/TCAJU2574262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a4735fe4920aee66c4657a8bc0b396a4079d6dc6ef739deb75301e40935cbd. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:34:20Z), 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/TCAJT2574274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b04d0f298a955f2e2550f9b7b45ed8714651b05896bb804249051f455dcee0. 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/TCAJZ2560485.