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 0xd0db392c0e976bf68bb7f429445b80c638fb19bfab4ad7e2fab4e5e596d09208. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ea2c756-dedb-4b95-874b-487b99245d27.json and https://artists.proofprofile.net/proofs/artist/4ea2c756-dedb-4b95-874b-487b99245d27.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 0x67c6fd8c4d93989f12ff40261e9195970593f53b9af883b3445603a94d51afb7. 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/QZHNB1977362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5406d40f9f35952fdef8088ef4da03b76afd2f934dbb15e62cda20ae9f0af8b8. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZK6P2032500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc1e07cf6f77f1e16701438bc5a2552761a924b304e0189fe4786f0b354e4fe. 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/USLQ22180353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eba160f617469a18022e7e9dfb8cd5247aacd3e011d7aaac723b57ca71cf4d8. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USLQ22180391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df7e808d13129e50a10c012e24f0c17a3a04ea293432cf29802ad1caab7dea1. 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/CA5KR2202249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49022b5e74399aa0b94301dd44cc71c450d41c1966098a9ec2212acf7d35262. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QZFPL2100227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49022b5e74399aa0b94301dd44cc71c450d41c1966098a9ec2212acf7d35262. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZFPL2100227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9153c1cb15c78092fbab4c8bacd9399546e75fd6f5a3a7c17c1aab3060c4e7a. 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/NL8RL2316773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af6ee4be657f3988e5a94b32a6b3c385cc7845148b0cf1eaef0eaac8d3b9fe5. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZQAY2475919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d4bbbe1b54dba7d8ac18ccb4d746793d2ab6623b21a4128bc42ea1d5ff4b04. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/QZK6N2464472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ca7a287e233cba9576fd321cadf8f74e8c8a1fc83d46d0e12555a1305d87ab. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZMEP2413815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fa33c7b101894d372ff6891db6bc39be84af568998ffcaf1b7a758ef54c667. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USLQ22180769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba746ff8bb646d5eb2902b882ec6eed38e8280af50e59605268db860b2a4f7e. 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/USLQ22180845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b7d667052ae16b35e67f9e76ce565e5da15a3be9cb1cafe444ea4816e3cceb. 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/GBKQU2580533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8037193af32efd3c6e83e61fc2db7bbce834fb04716e6c51b5e5f2d3324e9aba. 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/QT3F52553641.
all i can do is miss you (BOMBAYS Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7013ca954b8a16ae3df9b55bc510fd6fe21f6505d76c2d628f1e4e85a7b71b. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/FRR642400960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7013ca954b8a16ae3df9b55bc510fd6fe21f6505d76c2d628f1e4e85a7b71b. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FRR642400960.