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 0xea2d7ee312c1c4ee64ec11521f72184dc7af03dfbba6615681ee9d05f47910a8. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10c03c7d-e3d5-45ad-9d93-91be91655b62.json and https://artists.proofprofile.net/proofs/artist/10c03c7d-e3d5-45ad-9d93-91be91655b62.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 0xa1ee4cf486f29c8f212cd2b561ee923d80df59d0c8dea87d36465de561cb280d. 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/USCGJ0973378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c4d013b4e896dc2cb376f9f337c164286466a95fff4035fb60e8046303fd8e. 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/USCGJ0973379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10d5a63ee9d6ccc1a3f07dcc2b0c8e45abef720ff4742590baa6411568c7cfa. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USCGJ0973380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4216c1506ddf461efd2c71932165f799a70fe3db8a05112d5d43f4b6041f1af8. 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/USCGJ0973383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1885c90c42075b0a043181dd0908ff1a4d593d935416425bc0ec0b8999111e33. 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/USCGJ0973384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe198719a5d8ae90ff16a65c5949bf76b7465f5389f80883bfc2c8d19dda951a0. 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/USCGJ0973385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8659278b5c8a41ce45925c6ea4181aa86ff567dcf426dfc08c9f8d40a35f9a8. 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/PEML11111001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e56aa881ac924c14b6b6e6808bf0bd134b8010f02b62b7928689fc65b097cf9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/PEML11111002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf047846fffe3d409ddb92b4bacd2f98b8aa4141f1b44dccf211055d932a1fdb3. 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/PEML11111003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266ffbeea82a3e6e4852f286a552ae696ae6c1178f70f4d62c8b69635a97e97b. 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/PEML11111004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a05fef50d52c2a0fdc5fd7a22c5f0422879ccf7653e34b25832506b720fe7c8. 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/PEML11111005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302cbbcef69a1f0b1369d5a19027abe6d83942a6a3e9c2a1d9d751a11bab7345. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PEML11111006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0e33a49d70c8516a8593b5aa590e196d397d400d48575644096dbc8131f417. 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/PEML11111007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448ab0cdaf4e0ef5b6e792cd267e23789e7f7d64d53a238f2c4dc0958da9fe12. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/PEML11111008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3f0096d5196005906c79d2036f442fcb2cd1ff16d4a1196cdf13cdf762338b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/PEML11111009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc9edfa8f05bbf3098c044d0bfaf07882e257a577e1d63a305eab5dd0d35942. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/PEML11111010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd26dd725010497c6481730494b094fcb64759c58aa5cdf1b67f98e8202f1ba. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/PEML11705113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200123d2c3862c1474c6634198fd5fb863dd11965d7e5bfe617e9dd255fe9a21. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/PEML11705114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851fc1e47d2cb6f60b2cbdd3d12c9bd2a3f27103bbb31b910864da50728b01b0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PEML11705115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5025a9100ea4172a93d110a4ab203fcdb139c8be4aae6520af51595c1c515ae0. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/PEML11705116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4162e17e8955569c32281aa213a5ce04719fc03b6abc1c33236ec4914143384. 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/PEML11705118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea635c30a0f93dac7c93d6af6914c66e50052be360911e149d2acc3ebf0f434. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PEML11705119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23f3d5901613351f303908ea9b3eff1bd543493bf0358c96c48f99712afdab7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PEML11705120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596a303a58032a582a1af39b5e72b4187c43aa702134ffa9297b578bf5ec3602. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/PEML11705121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ba7fd80aeffb0a6125719601267afab82a1ee1b222aaad8875ee505661bd41. 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/PEML11705122.
La Desbarrancada (Maria Tta y El Empujón Brutal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e936368be3e2829f7e6e745a5bf6b7728a48539c945c2aab1867ac0e302a83. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ES71G2304482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6ce4966b02d14c59e0d153472c9e2e7f78927c434051041ddb7730ebd2bccd. 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/ES71G2011929.