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 0x84fafbaa7b6083267dcf77f6b7ef233a48d6d33b8e47ee51a26db4960661be89. 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/e5cb2f8f-74c9-4549-b6d3-f8d9fa69daeb.json and https://artists.proofprofile.net/proofs/artist/e5cb2f8f-74c9-4549-b6d3-f8d9fa69daeb.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 0xdba31878555c23b5b662872acdc4f7f18b7c1639a35e14035682eb5cce3e0ac6. 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/ARF411701806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5762610264c9e02e1dc47004f88767cf2f6a8b790dd23e80b63dbc54ed99e7c9. 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/ARF411900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee31c4d41bce86803e54ffe683abdc86ca3ca22715971de04cb8b406a7a8039. 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/ARF411900374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d1c76a5b7f4750008427087976e18c80abad5cc45bb0740b2adca00bff8170. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ARF412000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cd8cb40562d4c01991dab7f5e7e49977c9f9f4fa70c2607185d708b880ad61. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/ARF412200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53efdfd59114b2f012850fe73b171aaa5dfce9b51f73ed34e5ac3e8680d62fd4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ARF412000222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5762610264c9e02e1dc47004f88767cf2f6a8b790dd23e80b63dbc54ed99e7c9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ARF411900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cd8cb40562d4c01991dab7f5e7e49977c9f9f4fa70c2607185d708b880ad61. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ARF412200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e414a7ade984806f6d4af807d8d8d5ead2d56682d8f4683d41f54afe2d160c9. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:05:24Z), 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/ARF412100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d1c76a5b7f4750008427087976e18c80abad5cc45bb0740b2adca00bff8170. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ARF412000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bebbc06473d859fdd91e0893c1a0edc847b361fe146d8fd2ccc07862e57d29. 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/ARF412400315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed53790deb277fc38e769cfe896e64a2ba783929bf70ab8b893f0f76488109b7. 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/ARF412300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc887f6334634ca1849fbc2c8dfc6410def24eb74958de5876394e7f1a4a99f. 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/ARF412300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0507dfbd668a271bb90befb639ce6f3d237bce2b33ff4471d354094c9a6f2c6c. 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/ARF411401089.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 12
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba31878555c23b5b662872acdc4f7f18b7c1639a35e14035682eb5cce3e0ac6. 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/ARF411701806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee31c4d41bce86803e54ffe683abdc86ca3ca22715971de04cb8b406a7a8039. 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/ARF411900374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5762610264c9e02e1dc47004f88767cf2f6a8b790dd23e80b63dbc54ed99e7c9. 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/ARF411900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710c05934474a2f1a0cb5c5decae1060a75334446823b111461afec890223199. 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/ARF411500976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc746396b41a2c65ccd6bc2921cbc1d32a291eb73f80ba0e6249a44ffd62a2168. 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/ARF411800084.
Vintage Reggae Café - the Definitive Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0507dfbd668a271bb90befb639ce6f3d237bce2b33ff4471d354094c9a6f2c6c. 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/ARF411401089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710c05934474a2f1a0cb5c5decae1060a75334446823b111461afec890223199. 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/ARF411500976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0507dfbd668a271bb90befb639ce6f3d237bce2b33ff4471d354094c9a6f2c6c. 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/ARF411401089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62adea3f4efed485d33c0640fefea56a7f5ee3e36603ff75d0ada541fa5a53dd. 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/ARF411600372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba31878555c23b5b662872acdc4f7f18b7c1639a35e14035682eb5cce3e0ac6. 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/ARF411701806.
Vintage Café - Lounge & Jazz Blends (Special Selection), Vol. 18
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53efdfd59114b2f012850fe73b171aaa5dfce9b51f73ed34e5ac3e8680d62fd4. 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/ARF412000222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee31c4d41bce86803e54ffe683abdc86ca3ca22715971de04cb8b406a7a8039. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ARF411900374.