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 0x3e48b45f13441110bc18f3e6330b2228d7a19297f7ecb97df3c921890b5fc2ca. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afab15d3-69e2-4d08-90c0-380209d98574.json and https://artists.proofprofile.net/proofs/artist/afab15d3-69e2-4d08-90c0-380209d98574.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 0xc04728a996430482542147dad30d40a0b6e065081eca90ec8ec3084927fae93a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBGX61800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f280597b98c136ee50effc1a5e5c29bc26acb4c5ca5f95eafa94e37eedfe1b8. 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/GBGX61800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c02c6507f650c28e8a1b2481e69c0e053892662099da59401019dffaebd051c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBGX61800018.
Barcelona - Paris. 2nd Flight (Select and Mixed by David De Barce)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc879f946aabe79aa4497523bb6681016afbfe52dc8874466c5c2b933a9d5417e. 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/ES6101323303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687eb311a598a85f08dc3e25a42c7c5298c380c14617ec8d744d63bc47aa9ed3. 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/ES6101323304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0a3c700f299032de95b2a3ef0703abf17e0fe047d985707262a08beb3e02aa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES6101323305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b71a6fb93f3009e39b394dae9e97840b53dc92e58b9f6a7645564acf4b8e680. 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/ES6101323306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3e16b351238fb515a2dc7e6e6be0995debc7c28cf76a4acb478b557f407e12. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES6101323307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cf98e348b7af8eb0ce0c973660b70c0e6754f81d72df6d660d1bd21a552da4. 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/ES6101323308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d52bfb6e2bebb55137cd56502619293929dafb101d76ca79720f650b7b51d7c. 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/ES6101323312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f6d1b882e9ae97a5c6f0c1c384f4d76855fa0721746ef6dfb741b2f3797870. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ES6101323310.
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 0xa0373749ba4581f740fda8def6f3122c5644a5c1689229bd624faf99de813016. 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/GBRDU0700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c659234184c3786252da8108a019ef40064d29553ad64d289fed48e7b3ef161. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBES51200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc7111178593092c3c5aefe2ec1b689a8417bab746072dd749299a2e0677989. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES8741502105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8acf8a9ce1c49b2076824564129bfd4f2c33f179878fa1d9a8cd2608821396. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/IT00G8900173.
This Time Around - Heaven In The Afternoon Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e7a8d2ebc676e7eaf3c4e9a10d192b53ffbe5c18eadcdb2a49f8c9e087dad6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES8741502107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ec7b13cfc190f0d1251281e31ea4a101c9ddc5fb8555c448f5ffe1167166cc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES8741502108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d673de4e608ccefbcdd92442ec3cb6faac4026bfbb84cee758718d1bba364d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES8741502110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e22dbbc8dfd861fc27632edad400af54136365d7f41235a715a0e42813f528. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES8741502111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02bb5bbf9576fec4217763adf8d2ed4c06a76e8ab53efc082e9ed950cf147fd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES8741502112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652b817e3ed0c97f7f4cde4d6eabe7e006d018e97c0899945595d434befead38. 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/ES8741502113.