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 0xcd90504316b699b31a74268979a13c9604205419737caa77af6c811b531bca4e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92503e62-dbdf-40f7-8b3c-b7e4f05d5365.json and https://artists.proofprofile.net/proofs/artist/92503e62-dbdf-40f7-8b3c-b7e4f05d5365.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Colaboraciones, Remixes y Rarezas, Vol. 1
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 0x352538586ae5acc0e2d81b55bea84754316c2a1569729f059b38cd94c2be812d. 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/USDY42049841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a25529fbb67995b7e59517ad3b9638b4841a3b86adbab041c0d19875c9856f7. 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/USDY42049844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a6c8d45deb9e606c881069ce444d5d675e74c883a2e38d02b04cd82a9d8913. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USDY42049848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40218a11f980521cea9c606cd2f4254fd3dfe9bc6658495bb47280b05c6ac706. 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/USDY42049849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113e28e158cffa779c47ea3f38ad853ed7faf0ba0ec0742fb7a01e846e3215c8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USDY42049851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185fb8b2cfe49ccb8624169fad96e6ceff18fe83171ad511016e78a47124623b. 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/USDY42049853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77081b721668613cece8817d844b6b206aa6cad3fb465ff270f4778f96087940. 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/USDY42049854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631a5b487a7aec28a71cf0f44624be34aa523a18002698f037f5aa660f92dcbd. 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/USDY42049856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06928fd37934e4f1461c6dddfb2ee3a3c0335cc10f0d4b1a1d70beec28c97c7f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USDY42049839.
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 0xb6f951817d11d9ae40769b593f800dfc9dcddc986f99d76f7a66a31117340eba. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USDY42049840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a9397973ddc5a410dc749617a14cbd9292a7d8bde0c31d7b22108b7ba46290. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USDY42049842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb7885a0010ff8e90788eb51e9cf21c73fb29b94d32679f696188690ff3ee0f. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USDY42049843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0b8551ecfe982f9b54b322908cefd1a24f23587f32f7a52e0a30b0ba0350df. 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/USDY42049845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a4eb8ae3f4c6e5503e194ca8079a5737a99e4f32870212f310902074fddc98. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USDY42049846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7007a705cef1a525d7cdea500d190aaf47ea0af3aaadea1bce83f0cde7274a6b. 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/USDY42049850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46076645f192d486ff75085097994959aa3204515d2f19ae329bd4008eed9fdf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USDY42049852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603d6d6917d90f6a25de902146c50e3f825a6af7abef8d6e9e6033d976848488. 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/USDY42049855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8c270af5243d253de7a8da28fae788a6ef539296ebab4c9d6b4892085e91d2. 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/USL4R2117352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd297fa91263c3271c5d6ca73c5ef02033ba52f5eea39ac443a9ac008b4aa822d. 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/USL4R2117353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c703cfb4ae95edb98b0d48e29f27552f6eb8682f5f6442882c33bc258ad28de. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:31:07Z), 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/USL4R2117356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3ff7c6475f58dc8ad38f908f615c499adac244a12ba0baa80b428dcbcf1153. 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/USL4R2117357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e759eaaab05ca864bdc60de6db4f81653bae526685364b4dafd5930ff43505. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USHM82411318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e73ba70e64988185f7cf3e799ec7109f9933b7160e42bca5b39b58999c22e6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USCGH2542369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fa0a57edd49ca16ad98cbcdcceaa7de28e9691c208fec2e00840590ff57559. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USCGH2542370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fcde425febfaf2d8ebef99d5ee266ba1da45847c95f736738ff3bc23510ac0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USCGH2542372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60d6b4591c4b5b9b574021513e202c506b9f3ab616197c339ad1a20281b3295. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:50:37Z), 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/USCGH2542373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd978898f3b120d9c840cc8590d5d4cb89c7065b15352eb273c0bcea407fe632f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USCGH2542374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd853c1df1863c5f5837ae623a6175d95287ca063b41bbc09747f3724a86bb0de. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM82531403.