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 0xfa46e35ae345c2cc6917cb8412e5429932156042c71c7bcee2b764d78c777765. 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/a45aa0e7-1939-4ced-a328-aaf2e010cf09.json and https://artists.proofprofile.net/proofs/artist/a45aa0e7-1939-4ced-a328-aaf2e010cf09.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 0x2a4d6ca34db8d500410a237196d86b5a990469061c55712ffb192e8c0593d316. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE52N2354201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278f3affd512886051f4faebc0120c7de554497186616e02150b4d9f5dc4805b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE52N2354202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1259e7f818a38d51d5931173b610ed972b1bf0798235ca6b0300a7ada7c76e1e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2354203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddf1dd64fa15c63296092c1ec09e5e2f373af05b3b988d5d0c08d7cf4404da5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE52N2354204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e64ea4edfd0cf6e6c106d033549704ef3d263cb04e04c878a7e74cb07c9b95. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2354205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93727d227f6211ade23965de8bb6b04127f6ef13d4aefafc9cb0c00a56727aff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2354206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1421d9df128f77ad84a5742cb4e982323ec808cf32852329597f1407f47281c6. 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/SE52N2354207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330722ed1dcbd58f5cd81f972e72ec7336ef5e25b309951003ab0bfe3cc20c53. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2354208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9abc7157d3aa9e3d0463886206348d5c05dfa51e1e337f22ac4dea07846945a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2354209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0377f7081dd8343162c5ac6a9d5c4cb2655dc896588453b22629c7ecc764be. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2354210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f225304342ddcfdc9a8d97701008819983e389c19edd4b7a1c96d66e0fcc77. 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/SE52N2354211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7885d382d1383a55349b9d3bf08cc904e8b537a12bbd394027d71e8611eb74. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2354212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144070cd3f4e3171891083b8b38b7db912fdc7b2d38e06e1a2f3c401481672be. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2354213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2147b29bdd2025fd80f22945c765dc787c84871286b00c03b77a2df28c84cced. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2354214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600f4c60ec34a1cb174f5cbad312a0e5def998df88e17e65e13f7ba419b633e7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2354215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6427bb4c21076244f6c7a06918860e88d2e75023290ba50dfc1390805a1b1f05. 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/SE52N2354216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7033a8b013ea4bbc2c0d3ae8b1cf04149d6f8b0ef02e24814fe541ab387e1380. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2354217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299c7843cd017f715366f8cd858585398e72f587a9db7a0e807caea112c7a610. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2354218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa094beb34ea046a1bebe3460304c770c7f9dcafbd08a9762cb8bab9e0a2cfb04. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2354219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7f48ef2df8627483030df51616c67990549a0f0c8dc54cf58ae259e48a2c33. 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/SE52N2354220.