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 0xf069c1d225cc6542f47bb83e7ed931ff61c3bcd9f96a1d09048836d36ed7c588. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00d5c728-ea9e-4845-982d-b15b4385e5eb.json and https://artists.proofprofile.net/proofs/artist/00d5c728-ea9e-4845-982d-b15b4385e5eb.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 0x63cfafd76f535bb3f6df304993ca587d4e5ee4a8f9217492ace0c1c193dd666b. 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/USJ3V1065668.
Battement Tendu. Flowing 2/4, 32 Measures, 8-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d23783810d2f9df2cc511692c1913dc765cff3b4dbec15ed89a8a85925db6a4. 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/USJ3V1065669.
Battement Tendu. Moderate 3/4, 128 Measures, 16-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30194e9bb05a8deaf5fd6bfd7bd0d90b3429ab89d8a74ed96dcac93a96d6756. 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/USJ3V1065670.
Battement Tendu, Degage. Moderate 2/4, 32 Measures, 8-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72151d96e9c32a5a35942a0aceccdc1d595af098344b648724b49392a60f67d2. 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/USJ3V1065671.
Battement Degage. Fast 2/4, 64 Measures, 16-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd2d7117db8e5dec94c4043a48fd1a04769352e610cf446bc6f482df8057b19. 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/USJ3V1065672.
Rond De Jambea Terre, En L'air. Slow 2/4, 32 Measures, 8-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d3f310029cee666eb214e60673d0bc79baf2bad986456fd24bc70ab82d6050. 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/USJ3V1065673.
Adagio. Moderate 3/4, 64 Measures, 8-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27752d2a55638756c4bd4db795360927a060c6e847913222a22883352c8b2a25. 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/USJ3V1065674.
Battement Frappe. Moderate 2/4, 32 Measures, 8-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b4b14461f6e3c70b85876c456fa730f91672fbfedc87c8abc87be976c0e7b8. 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/USJ3V1065675.
Grand Battement. Spanish 6/8 Waltz, 32 Measures, 8-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e0766ce67d0fc08675ddd768dec6609df9ee3c110bfaab59b392a1d6e1eb08. 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/USJ3V1065678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75585251f25f58a2f461b2d2571d0549ff3e9abf22409b315aa9bcb754f1d9c7. 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/USJ3V1065679.
Pirouettes. Moderate 2/4, 32 Measures, 8-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bd70e81e6925663a73dd28c57e8063784683e6e139c9dcc26ceeed9f57e8e7. 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/USJ3V1065680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72f7fd08f097d268a7c1be7989342828de664f40ca2d9d3d792214735ed0b8f. 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/USJ3V1065681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ac90bb156308aebb51ee5f0cc7ae2a42f43bdc298a11401ce064223fd0c339. 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/USJ3V1065682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37faab32a1aef5ffb879885679b66007170721fdd3904a87afbf49eb3350d523. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USJ3V1065683.
March. Moderate 4/4, 64 Measures, 16-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a56128025f4f0a615f438ddc18b8ba47a85946f9707068733be2e7519a27795. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:28:54Z), 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/USJ3V1065684.
Little Jumps. Moderate 6/8, 32 Measures, 8-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a84feebf04d1fa6ec91aceb2b6649060969653d0439037fe7adeaa51de2224. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USJ3V1065685.
Grand Allegro. Heavy 2/4, 32 Measures, 8-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43e21a8488103419304451138b64ae64c045f1bb6060493d03f7478c19227fe. 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/USJ3V1065687.
Battement Sur Le Cou-de-pied. Fast 2/4, 64 Measures, 16-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b67cd4609a246ce59019ebc5bf05a24d15c2e15ae4670ad70de7ed833c63d8f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:46:42Z), 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/USJ3V1065677.
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
Battement Fondu. Quick 3/4, 64 Measures, 8-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e14182d6eabdbcd6b2cd76ddf0de16c7957253c405ffb88a521ab3be848e1ec. 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/USJ3V1065676.
Pique Turns. Quick 2/4, 32 Measures, 8-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01546f654e1aa70bee06991cec07dff4d1df5007e3a0d76d0092a4c5551386cf. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USJ3V1065686.
Coda, Fouette Turns. 2/4, 64 Measures, 16-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb8c830a8d0f562da07c6a7977392b9199b51e4fd317cc667505d0590c050ad. 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/USJ3V1065688.
Grand Allegro. 3/4, 128 Measures, 16-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c8775d805325577c1aba41f55d501d4127b3457b7e3261ba6d2ae84a057773. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USJ3V1065689.
Reverence. 4/4, Adagio, 16 Measures, 4-8's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5855b3360feab0afa8e720742d7082cefa032f22901b0abcf39fdf20bba65228. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USJ3V1065690.