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 0xb415fb2e1b8251b52289de6fa5a59c8c30fcabc95f14fcc27f2d47b9138973e9. 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/7f36dce1-27dc-42bb-8880-31a9c1566ee7.json and https://artists.proofprofile.net/proofs/artist/7f36dce1-27dc-42bb-8880-31a9c1566ee7.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 0xb08cb1f4118fcdaeab7e251b9e44232c882472b8cc5943f82408f20650c19563. 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/US3DF1947558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e082ca3241c2dcdcb4fffb93418f2445f0807a3d518b14a7d1f6396cb79a890. 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/US3DF1947560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4210ee3c9ec6f9845d5d75cca1afe280b13e745fbf3648901059d0e4499d282. 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/AR2MG1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061277dfdf276c3334d0b0519dd67b7f330e065af3142206d47db0dac345db1e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/AR2MG1900017.
Los Buenos Tiempos: Sancocho Stereo, Capítulo 2
Los Buenos Tiempos: Sancocho Stereo, Capitulo 2
La Antillana: Sancocho Stereo, Capítulo 3
Días de Blues: Sancocho Stereo, Capítulo 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa037882c4b3eccd7f659c15bcb4595cbb2f2b63e717808d5b538e242cede8e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/AR2MG2000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa658f325ccb0d9b786c1449810bec9891a857ab3d314c09cb68750b35b8d0c7d. 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/AR2MG2000141.
Vamos a la Luna / La Rueda Que Mueve al Mundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00aa86cfa96f0709f7b876e615171e1a6d57614021a2cafc205f85b83aa4ae5. 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/AR2MG2000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c0a4b07b6bd2d12c92869edfd4697a94014274e55374bcebfebd6e34a8caf9. 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/AR2MG2000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200c2536d33117f611006697715e76b5c5b95e3f0686903f7edd3e4fb8fccfe6. 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/AR2MG2000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eedd815c1a8db18e06016ac9cdaa98434e4d2d643b3f9723ab0ac844b888353. 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/AR2MG2000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fe025658bb4dfdd8b71a404222f5063701b428829d44903101f5eb2e58250d. 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/AR2MG2000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5be68c18ec5dde015a8b30d0c7fa8ce483120ba4ea95f56c77bac5a755a174. 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/AR2MG2000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d1b04cdb8ac2297e7f1b42aafe9fca7de7b0877a3629075d52af272b9ab045. 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/AR2MG2000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38756116be319df193ba83a7d0e1d0ee26715e0971584cfaa994dd7a8287f703. 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/AR2MG2000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f205752d3995f1b2ee2cd09ea20d1cb20012549c6c3381f0d449a8f162b20d. 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/AR2MG2000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eac61cd47e630552ec649f0500cf0ea37d6ec3a7bd5975b28fe0d405fd48154. 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/AR2MG2000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915b322c8cc055ace51ffcdbe615d94eb1622014c57c56ee1882a2d104953a69. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/AR2MG2300020.