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 0x2cdae9fb231b8011bb038b3731c06f998aee13d2cb788862b1c12075f4a6930f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2f9b7be-f612-4463-b602-cbd2a208ba5f.json and https://artists.proofprofile.net/proofs/artist/c2f9b7be-f612-4463-b602-cbd2a208ba5f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Schubert: String Quartet No. 14 in D Minor, D. 810 "Death and the Maiden": II. (b) Variation I
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 0x1753b9107acf6ee07ee28cb7d3b88fddcb3900e4e9eb1242146aceb9d98f19e5. 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/GBAYC1902592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d8e496d879d813f1f7b09b207cce2d4bc1d91366bf653f34947e59f44b8440. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/GBAYC2002862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc7a6c027fbbe808ac95d54db3acf688da3e568256b8ddc17ede24d3d464392. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GBAYC2101418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb448d1487f8fffb3b6c80ab3404a8ca5f017262d33bdb16978693061bddf62. 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/GBAYC2101419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56662bf1e97af58fa8b3ed16e5ae934369a130785b0e0da069490e52632feada. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBAYC2101420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a93351ea9fb7f208336f14f7abbd9cb758f6921245294600d42682daa3ca53. 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/GBAYC2101421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330030a90d55f6aff608685e738e73e5c27bd0ee47f96517663fa56d4a0bc0a6. 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/GBAYC2101422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937710aedb275e00245f51602820ab2069fc69ba03d8049f916dfc209698f55e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GBAYC2101423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21847c1b87a1c09d37d3360f6d3b3ce43bca03d967376ace625fcfaa73aa8423. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBAYC2101424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58938bd5b319ccad0541f6098101e5bb8c8ce245b1857fbde070609ec4e43fd. 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/GBAYC2101425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00436db90d40dbbca87d1d567d7d235a8c66688ee3c349555a1163f81fa3db5c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBAYC2101427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad785b52b66c1e956b79ba994f3ecac2a49a46b396cf4a2c3ec50b45ccee3385. 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/GBAYC2101429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1753b9107acf6ee07ee28cb7d3b88fddcb3900e4e9eb1242146aceb9d98f19e5. 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/GBAYC1902592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe099b95410146c5c4fce78f933225c46916c1646f35cf027cabf3d4ddb531f97. 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/GBAYC2200696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf365d0289aeb188b699a6ecdfc90a5a37213dc56ccd97f60be10d81e6e32ac9. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBAYC2200697.
I Wanna Dance with Somebody (Who Loves Me)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa0284f268410a5c7188f3f38714e6db19cae0d8a61bac12b8a1d4fa830d087. 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/GBAYC2200699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125ddd2d1e79f448e1826c8e14ba700e9c85b7579dcfe106fd186149df266345. 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/GBAYC2001971.