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 0x9d36b7f7fc1ff34ec0898fccd2b74cb1d20719d3c2edbb66baf69233abfe3898. 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/73fdedf8-d458-4cb3-b3fc-5b6ece8bce64.json and https://artists.proofprofile.net/proofs/artist/73fdedf8-d458-4cb3-b3fc-5b6ece8bce64.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 0xf4b628ce66dc5d2489b603669ddd32d9cfc913f11479b8be4e997e42c85aaa4c. 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/RSA222010950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501d054b9e3ea24e7e4f0143436221cce2e737740eeaeadd89ac1c2b317b7958. 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/RSA042300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f138dab89a71dee37baccf2e9e7ee19f622db25456c75168ce384f607a05758. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RSA181341424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22807d16a5fa132736bc1034f6eee6a3e6aa34d94e04d43ccc46f471c2f88a78. 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/RSA181340880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80639615bada68ae5c27ef7818104ea44920a700809e0363a939f317416f3fff. 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/RSA181339374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ab3cac6b86e4a8b93d24c739851f2974821ea3a9361d0336038ccfb09a9177. 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/RSA181340840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d23bb049033b648c242ecf9183571ffd29f54fd02c9df3e68d32f0db5cadb09. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:48:50Z), 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/RSA181339830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01893ab6c4519e7b67bb1883d8480cbfddc1cc28694be50fedef168c1e14159c. 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/RSA181342130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3e6269d5bf012d67c6f85edc183678c3dde3acd8acae50c6b5279bb9e85558. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:04Z), 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/RSA181344126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5a9b509c07a3399681e4f737e7e0880d21451d94dff7c24691ad4fa01528a3. 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/RSA181341376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0442f3b65bc241328813b5c58b309034549eb45e9857e03957a9cc84d6423c45. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:49:35Z), 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/RSA181343619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2ffee4a2914d9269ba0d21d336eda932591cdd7146fd933f30446e48c81f12. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/RSA181344157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248fcda745194fbcc76a54c8cf7219dafbe4809c879bac3f6bf686fdde79c349. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RSA222308258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac452d70d6acff1fa5da1743372d0ced54b48bceaa747e1a78a75aede25bc53. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/RSA222308256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48515c3a79eb8f4564fad50e607a53bc0e57e7066bc6bbc0681ccc21b73bbb72. 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/RSA222308255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9512843fea55b61784331b9245a8ffd53ad52d004a1b1e5299fcca66c2c1ba. 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/RSA222308254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ea4d0f112a91a416a71e2a78aeab9b92f954c43cba954c5d0e4448d979b5f2. 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/RSA222308253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed350806779deb0c598f303661c35f52b475db5dd2cfa20123919afa845b5fd. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:16:06Z), 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/RSA222308249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4a9946a8073bdb895fa440665e7d5bfd97e3bc1141f4cbaed07594c5245824. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEKB72503374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae65582fa11e52a12805933798e9f6ada65e04bbb79683fa69389494ccfe08e. 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/DEKB72503543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c08073c263b668ac4b34aa3916de83977b5213ff2c6ed129b47f8c69b8b1249. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/RSA222313510.