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 0x574d568fecd3a2f4bce5bdd12f0c79a03ad85054b606b8d8cedfe2b3663f0bcb. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/316d8f14-330b-4861-9eef-57d8b7f3bb27.json and https://artists.proofprofile.net/proofs/artist/316d8f14-330b-4861-9eef-57d8b7f3bb27.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 0x704c0e64d332832f6b21690e36f7e06f7734099ea0c87805726bbfa6d0e6d389. 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/CAL542222805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613a7395d4a9ee7ad0604d35a758799d73e9c3e83b81c43a0209eaa5a9549287. 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/CAL542222806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f40be84f9a4049848aebe8a1583fe17308ed450873ee861484e59d81dfc563. 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/CAL542222801.
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 0x301100be4db1619af1f5d996b1867d1b6d54426809cce4f0669853c3accef779. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CAL542222803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a93d62015d3d1f3b936a22a95419bfed5b4d1bc5afd09f5658528a59b2f4361. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/CAL542222808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e6f5ea91deed0ce1851e4fed36cb332b5461290825fc01fc3915126b2cf8b6. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/CAL542222809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf180dac8b8e455e8d48e4af79ac529380d64c6d554151a8e920c90e91af72f7. 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/CAL541920402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b09e5d3a8cacbecb27363e1990415ce424edf970baf4e7fe1a3619a0ec69ee6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CAL541920403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4316b73dd8077d4a3606536d3bebdc68e84e429100f1db2a4ef50016930c3a75. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAL541920404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c74ae921fc3f279be0ceb034996ec8fbd2c79067e1185811d85eed16064e9f6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CAL541920405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567cf1111a5475043740886ac63040fa93cc146cd3141d06e4007e0527d86ade. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CAL541920410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf917632ac4942edadeaf3d67759809f800487f51399ea10c0fd804929945872e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CAL541920401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66b6897b12259700de07ccb813aa376897648e6b1ef202305d729ad3001fd55. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CAL541920406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7ad7492374e1cbf4ade85680de3d1ccf98a503678c1dceb63e075ecf3c2234. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CAL541920407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c3df87553207fe391ec2b221b62fca3b3e3c9422b5b75ee72beb3752d024de. 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/CAL541920408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316f6a7fad81feaebb86e01e07378141b6734b20137abae4eb55926176833c06. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/CAL541920409.
Ça va venir découragez-vous pas [Mary travers (la bolduc). Adaptation libre Nicolas gémus.]
Ça va venir découragez-vous pas - Mary travers (la bolduc). Adaptation libre Nicolas gémus.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fade711617505a458b6ddd753478c6c9b95ffd6d58a4b09a99d1904f02eb9bf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAL542525201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e669a18a6e4bad4a01776e272f6506fd053188298ecc4685f6be4e6f6586bfb. 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/CAL542323405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a00d597ba9839ef581a87552eca6b4e6790e423c21808237c17cc3e055d0f5d. 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/CA2AN1700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eebc8b75e20cb4b8f310add6bf104b59ce2d9971366f7392edf050baa3e80d. 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/CAV702301301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b6a16f351286edc41564d0f3dd1d3e9b776127314febfd56bb95f966380147. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CAV702301302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631dc8bec09d513d9745ce35d66f0b9a8abdeea74abef9f14be4e7c8fe534746. 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/CAV702301308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69573e853dfce00d7728ce98f3352559ab21b807d14607a29fe4ce590cbebdd9. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CAV702301310.