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 0xe8c8da86a23ad5c4fd5165e932c140aa8f0b694c7cee1e733c9043e4c8494a60. 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/fbfb0b4d-e137-41e8-a1b3-8797b45cc526.json and https://artists.proofprofile.net/proofs/artist/fbfb0b4d-e137-41e8-a1b3-8797b45cc526.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 0x0754284bc82ffbba22c52a3fcfb64957a3f82066b4b198a914a7dd7015fa513b. 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/ARC080800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7103d20b8687410a8bd86e692aa21b2ac85141759d43504e0633c7dcd09c65f8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARC080800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ff43c3bd2f38b7f5810320dfe70cc39588e983243f1ee8afd476732148aa46. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/ARC080600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cfa373b48274e04864f954b3c7e65a5e3640d7c6c5b4c179298df33e255f29. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARC080900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444758a39f002aa4c6cf0374cd020a0dd0f3bbd1ad6e5b6b6691a0fad4a82283. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/ARC081200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590b95a56efb335404f8220e2ee85d8619b8dc1e31e33a216e36028110b2903b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARC081200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44b15a07ccc0598444656647d4a15e7dab7d5673f586e003b4d2e09b389082a. 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/ARC081200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9ffb080cecc4a890d269ecbc3dec4cf960c900a7ec8ff775b4218d703df3f8. 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/ARC081200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9028de3816178dcf5cbc177a26276a1a97e0692808b595387749b04e39b5db6. 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/ARC081200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7caf082068ace1826d8bb9a15212c1eeb2da030817e123a046d465215751db1. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/ARC081200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8060990b3207d834a5c965d88c3e245fbb0e930b404831a02bfe7ff0aa9ee4. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/ARC081200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd03e8ac83558298b43f9a6b0b79a642da5860e1290b7e727138ac111992ad43. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ARNM31900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28aa7973c415dca94da5ca3cd1ef36e33e551b96afc3d891dd49fcb513b6277. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ARNM31900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e1e5eb7a964153177cd1404f5feaeff635976590910911114bfd8a7ae6f46a. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ARNM31900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1d531cfa827cc8c429225c5ea9154521f8572f2eb19e888e905de41b35ce14. 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/ARNM31900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00da93ef9e7f84449acc27ab681e7b14f34e18d77b17a39199fd5d7ed9e823bb. 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/ARNM31900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3aa884f34d52a7a4d4fdc87b63a6ec13707db70cc1e5df55835c44ddd21ca1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ARNM31900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c41baf99381b228bbae64c482775ac3d59f8c9dd84f66e64e115ca91ab1527. 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/ARNM31900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bb0a50b72a57e24f9399252977af3ae62728fd5ff3f341167ca20fd00edb7c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ARNM31900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb6fbc52f3e5b03e28a513bb8a83ae6fb93430cb19c985077b0cb150afbaa10. 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/ARF020901769.
Constelaciones en el Luna Park (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c1f9acc71754bf40dc6535701f495dbcd0452e0c9e277e1fac20b7aba1ab73. 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/AR1T21900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f746a41c69d08d945f79ea5d7c3be802b1c6f2b2e452eeaa7779b925cf84cd. 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/AR22T2000008.