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 0x7459ff6e4f2d9664bcd62b9df35a28d748d57d9d156f77b99d3f78fea6a32547. 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/56025a03-7dfd-4b2c-ab3e-b2fa8c6d18f6.json and https://artists.proofprofile.net/proofs/artist/56025a03-7dfd-4b2c-ab3e-b2fa8c6d18f6.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 0x9eacc53911414396c0e9bcab297d4746059e2ef47ce0853ceb529c272d4d4c97. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:11:48Z), 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/USJ3V1218925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47091de869d74e24452afd84d9ba866a9511b01e9bd50e1183f5e72b0bf700a9. 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/USJ3V1218926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9663c52d43d5cea922b76f623a4c37750b6d7624a1d16051fe4735a038015e7b. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USJ3V1218928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8477d8da3bafca15ac381a69106f3c153f5ba551126ffdae39c9f4c57d932a63. 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/USJ3V1218929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745262439a54cc08295a5a4771eee702ddf138add34943636e8c7d8a218806ed. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:51:52Z), 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/USJ3V1218930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaf244191a7e024922b5ed730093242195442e41a99daf6a22c3a33a6e47be6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USJ3V1218931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c66a65acbc0409beed912bcd1a83bdaa92b050fddb7c7034bb4f7b6c311de5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USJ3V1218932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb9a18a47c21b438ad82d08657eb09b685e6af6a1061b48884817d870fec6fc. 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/USJ3V1218934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1486d008579144885e4eddd3d249a42b617df1c368af140a9ce63bf37fed842. 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/MXF550907197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7bde16cf0c854e1a8236bdfccf7ffe5657d89b3bbe3610d446a89673526182. 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/MXF550907203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cd546ea008f1a55fd1951eb79c8a00bdf82598834e3604b14cd5eda3161405. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/MXF550907204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1eb13063102f7b228ed746ff14698fb36d2d930cb20a5dd8b3443a61b81f653. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/MXF550907211.
La Tromba de los Arenales: El Original...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8dfb4fbf2bcb4ab7d639e5e3c50cb3069d9fc0482b64a00011aadfbc593485. 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/QM6DC2091352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7243705bf38075a5566998dcc1c3513e50fdec565c9012fd8757f1f0655f1446. 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/QM6DC2091702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8066a90ea5d1a8bcdbc3f7216d7ee7394bf56cadfffddc65fb1b3dcc837585d2. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QM6DC2091710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfac56532fa9a8923df7f17d226cdc21d2086373fee28a640451615a89b43c9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6DC2091711.
Popurrí Cumbias: Tamarindo, la Hojita, Camarón Pelao, Tengo una Morena