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 0x6e0cc8a8284eacde0d2ae1592c694cda5f71052f830682a526044364c6a6bdaa. 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/60af865a-9431-4c36-b212-392a0717682f.json and https://artists.proofprofile.net/proofs/artist/60af865a-9431-4c36-b212-392a0717682f.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 0x6b4898093104efe3b354c0e02fedcc63f74266161ba0fdd053919741ca4412f0. 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/BRLYE1600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99514e938b3457be89f4f9cb296fffab43c781c166ba73c1ff367e2e82ece3a. 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/FR10S1908068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9457f95273580644f0587c77507c682b49b0b202405d58b5320cc337d64cf16. 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/FR10S1908073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b95efde3370d5bac0e64f80b36cf8f54a217d271404eb285521732009648e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRLYE1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e17198c96faa78c1393e80e7bc2ab90332aafd7d967dc2e680e4fe86855c15. 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/BRLYE1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4b4c5a8489a10ff92a17f6a47acf1bccfbb01c518e66c713f065a48da7c5be. 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/BRLYE1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760e8d4460723ba7f99be2fe15299f446c7bd51e146f6da93f1bec8e0c6c48d9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRLYE1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5444b8334ac377ce61e5ae15d8f43050c7900d73b51aa55d73b5e64481065a8b. 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/BXB5O1900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1025d8b103191738408f0eff1c89d264a6d718e2b44c3769e4d5346f65096a. 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/BXB5O1900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a755576529267644b4cdbd21ef7693187890634b75dff672222ec88cef7bf95. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXLVT1900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927ae6ba80a5e6a6e9948db68274b01c05f08a9161be0b6c3f7836feafb2f622. 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/BRLYE2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7f7537c0996b70d33f621fb5c1007917237b532301f6274ed485ff8878cc69. 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/BRLYE2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a702d895cd20a48b1252a25b37bb3498db52fd9df4f8ead9f0d53e070af6c1. 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/BRLYE2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc21f2c402d142b5f4d5937ae53eb20533336ea4e3f08ea54bee3c25f74d9975. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRUM70500310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48056372c572875e5745eef83ae904958732874e69da5900f726f4881b81072a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRUM70500307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1959ce57be72018cef22ac7fee5b707c171f80de9100bef920bd9b17cfab9854. 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/BRSME0200424.
Luiz Caldas e Saulo (Ao Vivo na Macaco Gordo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc094f613ec212414f642146da7cb62e930b7a54369776e96c40c4381e291b377. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXB5O2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d4280c4aa606c88343f516d75ca1ae752901a88c6efbab75cfabed732c0627. 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/BXB5O2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21aa1a8159c107b5d56a2bccad96aafc617edb16490d3926dd363735ac2f16a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXB5O2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d6b694016b2933624e33b7c54c2d001db3abd225e38a72d276e43191b2a392. 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/BXB5O2200022.