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 0xbc837533e781f804c162fad6df6d7cd6d0dfc42851a92ee70a9f7a194abb9f55. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14766dcd-4297-4a43-a42e-37035f78d3b1.json and https://artists.proofprofile.net/proofs/artist/14766dcd-4297-4a43-a42e-37035f78d3b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
En Bolero (Boleros Espetaculares del Pasado)
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 0x81df9370c7f6b28a8052dd933bce73119af163b8341342f6fd6024399caa3559. 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/MXF551050323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81458d6bad15a01aedeae836ff34be72b5e3cec0c3a5706dd5bd618fc740bc4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/MXF551051052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10158a265537ca6ba64741484476c864242e3a6fce775d1f2940e17468a788fc. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/MXF551050324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd8617b98cf99d01afd5f5247dca01bd3bf3edf9177a6c078458488be4448d7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MXF551154812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1429012158b4f117c5e20023692a83dfb6848b63044df3daa1b3e65026b439d0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/MXF551154813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbceea24b13caa6fa2cc367129073784170e8861dc2ccb650e158430f02f1d0c. 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/MXF551051051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f712d29ba202f1376af956127ee86b7f5ddff566bbc474b34ea78c3b9529e24. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/MXF551154814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7d66da5f60c6db2b439fc2c028c89e4e3f312a716a6d1428392f0d2d0c2d31. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/MXF551154815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ae9d29787526e6cf6e81eb391a1bdad802020cfc90a670d863c4ab7eb81a6b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:28:49Z), 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/MXF551154816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891da8a1fd9b36d4fd40709d752fa983a061e52f3c0d950c144d686a52661e40. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/MXF551263147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8148513704516743895bf2f87ed3af0779b302184f00258470124c6a7a97e1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/MXF551050326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236c0f3e19bfc0ed2662f5fe82f0c295217aff80eccb019f2309f5321965fc9c. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/MXF551263148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0184335a7647269906abb2478b3db43d56901c528c5008aa4e6b594308da598c. 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/MXF551154820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364127160f93a91802ee61bfd2b3aad8b861cdef06fa67269239694aa3362fc7. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/MXF551263149.
Los Fabulosos Romanticos De Cuba- High Fidelity
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcc21ca2ddd5be1a47587810ded9e7e0d0af5a073b220e6d5d34f8d1e5bd51f. 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/TCAIJ2456372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69599b4ae0bb46dd78500e3e5a52eb602fb26930ac742292ce9fe310f1b8922c. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/TCAIK2456379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa07814455a56f2e99ce36dc727868c449d484d3d9ebe5f55c4f8d5ae6dda7d2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIJ2456383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb54e7dd962ebfa9b3f3ee55ee5db58d6f550b6cb4206ef98bf8e1ffae6a674. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAIK2456393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e37691a534f6ab1ce46dbe2277cee25ed04114cff27562fa71baf0eb4af958f. 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/TCAIJ2456397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b2cae23e71376064d2471dee516b299777ab977b86e6949ac812dac1708a2c. 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/QMBZ92081861.
Cuban Music for the World - Besito De Coco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054f63ef7a1a006c32762fbb570f4e9c0ca73f48a30ce330677d54653da1000d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMBZ92066794.
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