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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1157280e6699d9e6f216ccc9242e2c967e78f685553d9883135b7d0d493405. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bde0d9fd-3257-45b2-8bc5-2ed6abc0f964.json and https://artists.proofprofile.net/proofs/artist/bde0d9fd-3257-45b2-8bc5-2ed6abc0f964.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ee982fa04734fddc4f4a4aac0b740934dbf3d01b41a1cc98357b5b2f505c60. 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/TCABR1343033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c26cd5a12d1ee91a4834217bcc2c0654e3c8aa2e96e5b66a572fcdefee5e58. 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/TCAEM1952066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a59e174f5ae712a79073dc0d60f0b08010ceda22f22c0bec17dcfb524cb784. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCAEM1951968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f78134e599d99b1e70864f2aea506db247a25df447c32b2ce5505cb2fa3a86. 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/TCAEM1952020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682e01d118e7acb1c3dc85bc8272adf9da0d106b0e6bbda96e7874b347c8e6b6. 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/TCAEM1952014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7eb4d5f1629fe150ec402796b843344fa3bc93f8ab155014095f03e50813ed. 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/QZES62173567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eeca9d8a44b551a2d230c5f7631655018795bb439ad81e30abcf26a6fb0c563. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:41:34Z), 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/QZMER2132068.
New World Disorder (Guilty Until Vaxxed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9086a7e4224720a13f2ec0f89f4825b0dd7753814224aa4d9f3be497ec907a. 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/QZPLR2113320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b002f2ef3d532258152b6b14e8194b73fd68f2a48d36793ea55b23b952fec8. 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/QZDA82540638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9362e4e5f99f27e065455114e680862c92efaf77f0da38b25cfcb10c0cdf5c9e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZES62583844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547322b3c19918e6d6e9dfcbd9580b0bc4b6eaa75207f85c4cdd552719e6ccb1. 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/QZHN82535968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146ab7216220848e15ade49dac19d3a1e6d77bfac807abbf59dd102870015e08. 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/QZHN82540710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d7fd1dd0e0e4d22d2ed3d45f62688807e42e2db828041d239fa42fbcddabd1. 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/QZRP52115079.