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 0xd26a121ec38998eeca6badf3d7b468128269501734e1ba36facef537b78ac1c8. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ea2c047-1afe-4629-889f-53b4094373de.json and https://artists.proofprofile.net/proofs/artist/7ea2c047-1afe-4629-889f-53b4094373de.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 0xed8e3d2e244ec0fb3d30d29d78ce1226800e4de308bb3371132a415768dc4ee7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKHDU1600067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cb65c1fa6f9a068390309d91e0f340a2d91977d80d34a03c84e6a4ab4fb606. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKHDU1600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877d0ce5f1a69c2ece9d1699d4e8002bd9efa2c40679a1c0d7813b51b6e5d018. 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/UKHDU1600072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce72ab085edaf4af3a54fb1c39ebd3c643942f062c6a6505c5273eacaaaa4130. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKHDU1600074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5614ed0f8e7dacbae18ffa782ca8f6e7a5ef51f0782cee00a1b89c9c08d9d908. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKHDU1600075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9deda6674458ad421951711ac9d644d506f60f177c168e2a8434cd2f0cf278. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKHDU1600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0824369fd423fdb7aae89616136a8d8b06668eab0299d013013e93877b75d074. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/UKHDU1600058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c72cd3ef6a302107802e4e767be26da2e828e424e04f44d41a4ef88babc79c7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKHDU1600059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f87138971f2aa1399547e554366c5cf5a7c5e1842990a99ff62c7bd6223aaed. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/UKHDU1600077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8e3d2e244ec0fb3d30d29d78ce1226800e4de308bb3371132a415768dc4ee7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKHDU1600067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c18b760c970922a9c3ef23881df6189a390fa742ddbf127de138c9d6bf8eb06. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UKHFU1600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787ecabdc1eec85878f5b2105b249a66957f3442cb7960ca08d34ed1c9bdc760. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZPLS2319183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38f19d1301012df99330335c0616fc775a3cf94ee5c3b72f19084ad4d9b9025. 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/QZNWZ2328928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dcc77206a6d6bb67571d8457ff85249de6d2ba4dc5e4ab5319480057ad3328. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZPLS2319185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995b092f22f9a6d490b2bcb72c0c2c12cb7cb528c14f6224a5ec5b868a91ebd7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZPLS2319186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d246c1af4c6c6f7ff6b5fc98e70664fd5a94ab41052de2f8cdd03c45043518. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZPLS2319188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e694eac1126cdd9f7a4aa85a775115a6917c6cfa57f43c7552c5caefd7f1cb. 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/QZPLS2319190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c87ba2475bf464172db5d02f9892357e84b67c448fba50469190a2a0102363. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZPLS2319192.