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 0xa79a9f755bf868389db75ff57cc7d40889d27788a2980070e7a034ca8db0e69e. 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/4a728a3a-84af-4016-af11-27af97175a5d.json and https://artists.proofprofile.net/proofs/artist/4a728a3a-84af-4016-af11-27af97175a5d.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 0xd379da0e9a66dc6eac44c0fc1d8b9e126a012f28df9af21657a0e783c0742b7a. 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/BRV5S0800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6e99ace55fef345862c0edfc0f2fe7a65b52a49b2cf935f384ad0d58b247f2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRGBQ1300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126fa4c010cd50733c386e01e5138fe93ab1324d167cd33c6c1125be00464e0e. 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/BRGBQ1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc7b1d1357f3a46f77058ea58e00d04d672268861720a9bd85b9571d318da0a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BRGBQ1300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb24f11d9aee9c21d4f2a52f6992818a9f6839c7e9dde6e0ab6a677a48cf701. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRGBQ1300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489f9831ecabdcda0945501971ba87c68338158c2c5cd25c8a7684deeee83243. 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/BRGBQ1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3e51cf5a57e8b546bb22ecc80d0a6aac9349473720aa862ad5e4eba6714de9. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/BRGBQ1300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffee11c3cfc907ad0d64905685113e1685c2433b11877d7c8f50673080de4ac. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/BRYCG1400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cae81982d67a520cf4db2d2e7c9e7000b166b97db92b3bc3a29ffca3142598. 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/BRG4H2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5abe6846a388a1f9c10a5675cdc3cf48fa53c307c21c6f6bc6806ef09f0f9f5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BRGBQ2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabceda15cae9992e10bb0e1020cc84a5992cc14c5ac75e8593cb918a30cd3d7. 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/BRGBQ2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42209b7cea6101fe5619ffc9c853fff60695cd73192fc1ad7ef31c77fffbba2. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BRGBQ2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cae81982d67a520cf4db2d2e7c9e7000b166b97db92b3bc3a29ffca3142598. 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/BRG4H2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c261a279a2e90bf584bd1f2a23de5656f01cf24e966f389d3b2066fae81b2d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:05:13Z), 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/BRGNQ2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3664163cf9c2bd8bc14173c00acb03a2946752fcd8465c03c24527ee1786834b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BRGBQ2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3664163cf9c2bd8bc14173c00acb03a2946752fcd8465c03c24527ee1786834b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRGBQ2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd2228cacf7d97a76bee807500d6167a30f25cd251949a7fe5214b7074749d5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRGBQ2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415ece2be31c80474340ff43b5ac61e36abfd3abe3122ff54522c649121aaaba. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BRGBQ2300009.
Coração De Cowboy (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863082a5fe1c1a1b28967b44d76c33c6617474a47cf6caa2e28f88142cb1a9ed. 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/BR4P61800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5586035fbada73f4683a669827a3b61aa417cb23493de473f36f040990fdb129. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXGTT2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028d7c3d48dc416ef2613d7f3c104c5b011d67f09afc4ad5d35a11dc6ce10d2d. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BXJ5O2200009.
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 0x41055d8bf07b876a965e5536ce8cfa5aac4b6179b6a092513b2294dd703bf76a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BRMRX0600004.