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 0xeb5766214cb155ce66f891ea757d551a703b51188e8b572722ca48f2261d869f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a937340d-29ca-44dc-be60-5c1aa16cd4e3.json and https://artists.proofprofile.net/proofs/artist/a937340d-29ca-44dc-be60-5c1aa16cd4e3.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 0xbfdaa5ae378dc8c6ba94dd0d8398856fa5c9bee08cc72df0af3bdd77e5d02236. 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/QZHZ32277194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069dd3da8b98ff1fd049f97b3f7777402cbfdb73d8c9718e119487db56d4d8f8. 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/QZTVM2268871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0047aea5835f0ade637b6a0f1359dea5d25fc502b947d9c4dd7bba8af585f954. 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/QZTVM2268872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d88cec2b757a27295048e5ba8b8661394994f1d02680eb9036db15b7253b90f. 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/QZTVM2268873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c39a699485a0f3317dabbc346d4e76a44c11522566e183e6207adcaaae0331e. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZTVM2268874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b538f25c22177eabd1a33c321de00cbe6123c40ce82388e0810f666d55919e. 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/QZTVM2268876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81b8e441396db4fc75890b27c166b8a296dba4d7603fc457c34756a4acf7425. 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/QZTVM2268877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0a0fe0b9f24f4f28f5e5fd7c08f91a807f88cdc8eb50ce7eb5a39cd65486ad. 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/QZTVM2268879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5f8816cab21965f5e7992e2220d8f3f6cd0bc3842b1004913c7764178752e5. 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/QZTVM2268880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410631c728edf8aeba7e7f238a073be5f3eb010254df540c915733192e239432. 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/QZTVM2268881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be42507e9b23b2be3a769c88500e0f2d63427e6d58f78a8d13bb6c98b003009. 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/QZTVM2268882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8141ee0a9425781218df65d609eb59275e8ba4b278430dc82c8b63f56ea0d690. 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/QZTVM2268883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdaa5ae378dc8c6ba94dd0d8398856fa5c9bee08cc72df0af3bdd77e5d02236. 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/QZHZ32277194.
Los de Juancho en Vivo, Matildelina 2021
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7058f56782bd89deb46b47aedb930bb1a6751c24ee0a69db4784ae4a98249e0. 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/QZNJX2122681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4509195cb3138f600fd1970222fe130b914d344253cb442ebb8a3580890fd7d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJX2122683.
Mosaico Diomedista: Gaviota Herida / Hasta el Final de la Vida / No Era el Nido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40675357023482e313aec9202c1cb10b4ef9c36151e11bd08611927925dee85f. 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/QZNJX2122685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad84fd45fcc0961980b4435dae49d128149e7c944423bd7fb80c837815e3920e. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZTVM2268875.
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 0xc1fa6c21a688b34ace2eea77336c179e66316b229b57f34e2f6ccc64bd2fec3f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZTVM2268878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8fe25a69c6413bfc8604f191bc48e1338ec382818c2b109ffc26110aeac97a. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/QZNJX2122682.
Juancho de la Espriella y los de Juancho En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2390798bd69bdd120b8a1140048ba26945077f0eaa6f78ea9dd47f6851af524f. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZHZ32105076.