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 0xe3a4b734689dd9c7b06d67440192927ac37269a435ebb4e0c1e0cc9dd518c4de. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27ecac00-e3e1-4f27-90ac-57dbee72e918.json and https://artists.proofprofile.net/proofs/artist/27ecac00-e3e1-4f27-90ac-57dbee72e918.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Botalon Rejo y Sabana. Compadre Gerardo Brito (Remastered)
Grandes Éxitos Ayer Hoy y Siempre (Vol. 2)
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 0xd9f9181b464f3d06f05e7c916a426e12901ef40053d1ec7f2d7828394acf469a. 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/US3Z42103187.
Grandes Éxitos Ayer Hoy y Siempre (Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ad3ef8dd6eb0aa9c24b41cd4874d009d0b5ffbd165bd87f1495144fc89f2b. 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/US3Z42103177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72b6ea6962ef6bbe944cc2fb9fc816c4a9b26b9ef1dd611f4338eff34c7a32e. 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/US3Z42103179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90fa2b0831dcefc63d99d7f9c2272d0059c116e8c6077a367e45fc505021f18. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/US3Z42103172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bde47933415903ffbf0bd78c36af6a6a2d2ddcf5d592a902a995f77d8c8c44. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/US3Z42103174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb582f178ad1909a7c1fffef104b497835470cd8317a51f6f4f6f494eb574bd3f. 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/USZZR0912040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e5ce6d1371e423b1e91a899e093e6804457621623fef7f5248d4d9449bc0c1. 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/QMDA61595518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ef41afd0a5f1fe560bb66b5f1759e26d66f05a419d4bec376b96e3281d14e5. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/COA6W2102605.
Recordando a... Grandes Exitos Llaneros Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa92af3eb265972fd9697f4c4903151e8dc119490f92f25155eea4cb56d85e6. 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/USZZR0911024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deae8c6c6228f5834fe3d3c8c073ab06035a6f28bea0b44ea20f09cdc339447. 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/QMDA71354166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86f172ef3fa110f0bedbc8867164d22475435d5cb7482d6341dfad899e7f409. 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/QMDA71354171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac44b07e8e7160bb1914343b8597bd356731352d7aa4ad0bfb45bd9d6f0637e0. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USZZR0913197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ffef5b12be31b5bd8d0ead4cfd09a8ebca58e822bda667824452a390b01201. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QMDA71354270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7683db5c574f72dc177f9b5c3fdbec1053795d8306175924411553288f084a3b. 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/QMDA71354274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17230e287abc96b711cd6d0d304722690ca5f4219ffb268409acd0a097f19ab6. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QMDA71354277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2315d883c9ec619a7e8346b5c86852adf340a4014c1fc4dff6508bd4389f5913. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QMDA71354545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735d44eae7771332658ffe3b4d4751aef26f4f951e605f03f93e484144693cf0. 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/QMDA71354547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0720662a3ea4ee12cc9aed37df896a49098611146e83a7d82ad54c247b52062d. 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/QM4TX2424250.