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 0xe70c93048dd15f78d9e3fcacf734175eb1f39252d2848f8a50bc418fd4f76e8a. 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/6e1cb957-8051-49d9-a147-34eeb374a3d8.json and https://artists.proofprofile.net/proofs/artist/6e1cb957-8051-49d9-a147-34eeb374a3d8.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 0x9ee5607f452ceb05e9cfb804b9e69739dadd248a49f5e5fe31fb99cf6299da42. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/USMP60263851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a4eb17e74cdc4e2a5f86f430d2a063821e39a41046929ac5c157d91481b436. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USMP60263852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80857ae3cf71c2a5cc0933f2eb1290df3f8e12898200d4c8e339fb5bb5fe99d5. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USMP60263853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbcb0c02886015a694ba03e443a011e4439cd6ba1a24714a377e2c57c5e14c6. 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/USMP60263854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f029f393cfa9e481e04afd7cf24fcdd27520d8e43d37fa5b28ca099d6574412. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/USMP60263855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbc9114b38a02622e35f15e8a7b733fdfb220136be68204906c26887c5429b7. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USMP60263856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cdcee1a3c3b41e45e381bb3a9189fa54673531d076cbefd028393ff4e9f2fb. 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/USMP60561481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0244d1a2389225aabb62dd37717b4d71ca2be47320803070f96d519baf6edcb. 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/USMP60561482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9e76c03b41551941c9760678966eb7c33797e290854611868dd29f2907a80c. 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/USMP60561483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a21a435dde0aa700baa79d17c14397e9171400bd48d410da382c5f7593c27b0. 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/USMP60561487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4a663a0815c1ad3cb7262d886e28927f80555b0ab5fd02cb3a3001e936c622. 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/USMP60762052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48d71d05403b18323a9dd6b7a284014fbe15bd0959230aa18f7022004f9919d. 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/USMP60762053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b969b07f9fdcd548ad935f643349e2dd5eedc6224b75e166cb9f894aef0ac4b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USMP60762055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd38fec3aadac85c53e09f161820570a7bef03389d660b387a53ee0d94428831. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/USMP60762056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da5d23b2923d8fa8a48baba139e895231ad9c77f6f4f69fac76b1ab4460a37e. 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/USMP60762057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a08a5b0ac698c1b986817f0fc07327fc7a4bca5884de08d7d1a2cb4cb5265d. 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/USMP60762058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9a7fa83abce6e017f30b67fbee2798402bec25488c1b51f1537ff14bfd6e66. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:34:42Z), 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/USMP60762059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2b19964e838607b3af7f2aad149014e9c7a2d6bd8534e75000e1a29c392e67. 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/USMP60716205.
Traicionero ( Version Hecha En Puerto Rico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9200f86e21960fa90c927da2dedb6ec65e5035670f5f2bb559419b767f0984. 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/USHM81239269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2f618862999fe8b7ba005b8699ed55bfbd2d9eb771911185e2c34dec0fd70b. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZES61939517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240de3e54477d0cdfbd50184b84360218cf8c8d897e1a2b58afef67cb6895104. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/ESA011580396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e107314ab470e84610819ceb95222ca9a9b20a3a4e987144ab5766751ca729. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZWDW2412670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b76257aaeaa03434a3b44bb669ed200b5cfccabc5f0f0ffbc29d0f8e58b95c9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USMP60862447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea536b01521f82784395b70882ef1b6bcab1cf2081a2654e0bcd57318b182b5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USMP69962979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238a82e874aef07d3ce83823d8de62eacd53442255521d0de2e4500d008e0e86. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USMP69963121.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch