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 0xbfba68229e55e1cf00d8e53c18650eacd8002c7eff38bb1430222230d4b523ae. 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/50011472-c3ac-4f58-b792-964e200cd47d.json and https://artists.proofprofile.net/proofs/artist/50011472-c3ac-4f58-b792-964e200cd47d.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 0xfcabadd823aa3c63e6206af271358e09fc6b6e17c21a59ae2ce8551c289e8b50. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUBEC2051329.
It's Beginning to Look a Lot Like Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cde967da69368cfecd806ed61c381460148bd5596a8fb28789a2cff835cbda. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/AUBEC2074269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e68e96e682cf835dfde6bbee728534925d9552ac8ee8958c1d8e31bc481977. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUBEC2144793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c49dbb02aa761cd387fd740f68f12ab85b0a2d8e2f443204e2f83f30b40f5f. 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/AUBEC2148339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf066237cb0494a657528810fe41c6093cac3c21a7b313de74650e9eb809e6a7e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUBEC2152340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7643c574400eb9fe29fbca61024c4d45ba5c150d8ab65edc37e252e152d1409. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/AUBEC2235290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fefcb834960e5393564255d8b6a333ca8f6ccb469fa906818eb8682bca47e0a. 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/AUBEC2302213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2f40e468bdc0dbd50ba91023e99bdb98d3886dd3ef786a522f4ec58f132a14. 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/AUBEC2302982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9505db02115d1775d2f6419eb1674d468cea132f285f1954279af42a7f5f728. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:30Z), 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/AUBEC2303204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29d603a04ff79e04fdfe9100afd27fc90b9f1ab4acfad06051b8f82d2243dc5. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUBEC2304593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebf3a4eb33d32c0a12ff0766183f62aeb2d2186acf36bb50745541cc87bbf2a. 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/AUBEC2348995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7680fe672f0fe3b079e99df29029c3c340d1bf170592f4002edf7e61a66fa55. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/AUBEC2354294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32427312e449c5e5aa5d9e0e292d7ddd99230aa8c0bd388baf5d8e28a9138604. 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/AUBEC2354295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe3ad5004639d12497ece5d7273b88ccea76d8c82c09d87e3eeec7c37540f46. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:37:14Z), 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/AUBEC2434919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e75b61c749736656358e30c9f6662315f3cf2ee4981f6061c53f3bd5578f453. 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/AUBEC2593556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4d78a0e243bcbeaed5bface42a8f433686a15db7ed96fa2c938b5171caab0b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR9W12520825.