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 0x9c155fc61abb04c190c37229299ec2e24a5b7dcb534cc30fbeac5fd162c84249. 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/a79b6638-377d-4cb8-99b3-a8f5515f7617.json and https://artists.proofprofile.net/proofs/artist/a79b6638-377d-4cb8-99b3-a8f5515f7617.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 0xdacfea60e4074c08dfabe52ed42f092e10cb52c1cebd084be7dcc8812b6d8279. 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/FR2X42306507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d5f9a0101f862058591731266d3ed333086cf06ab1186ca6219c25ef758ecf. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX452302431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e0148506af8cfe5d8d66142f2527582bcd0d75fb28f13dcb992e01f7a58e33. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DGA062311368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a51ace406d83664210c5b24b8523dbd7960d4c127bec9e61005743f24c6787b. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DGA082306915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f4fba33c06cfce1971ea0019996befe92ac0cd7f1bbfd2b536ee740f8ec4d9. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DGA062305329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6358a3b74fa7c1223a1e339635704258c47baa102173d4ea70d1c98b02f5b64. 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/DGA062306853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1490c29c02873de05ca454a5a186a73cc099dbe2133fada673d55658c6be69a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:38:51Z), 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/DGA0L2392414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10f61a89dff6375d78ae601c602baafee238beaa1b9516fd8870515d59374d2. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:30:20Z), 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/DGA0L2392415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f6c26634a42c7a87fca5ac25d92068547864162dbb1a8f3a9a416e0324481e. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:25:54Z), 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/DGA0L2392416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e0148506af8cfe5d8d66142f2527582bcd0d75fb28f13dcb992e01f7a58e33. 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/DGA062311368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd382668d06304718357e1ca7484484fa7372119d270a88ed810724faaa40a69c. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DGA0L2392417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe888b8768f8e45a6de26d8a542bae77f8b09b1d047b83f6dc565e48a6bb396aa. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DGA062306881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f4fba33c06cfce1971ea0019996befe92ac0cd7f1bbfd2b536ee740f8ec4d9. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA062305329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6358a3b74fa7c1223a1e339635704258c47baa102173d4ea70d1c98b02f5b64. 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/DGA062306853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe345a0f4bd6a9c4584a747f43a2692576181d2dc871c36a016419e3cb5be2057. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DGA0P2359834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa87659eec1c965cc0718ec29395f5865ea0f3c28704e4cae4f835cd84956814. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:42:25Z), 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/DGA0P2359835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa071f82d89189e040d1d7d71041496da51d3dde48ab044bf33b4e342b5ec2673. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DGA0P2359836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ad721173aac40595e9c533890a648bfd3a0d2290c593fe1619ba258788a046. 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/DGA0P2359837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d78ff234429d8d14d749f6eeb1cf6295bee6593ca85812d12df66d477badb08. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/DGA0P2359838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c50ed3181ae38d41361b8c9e40ae4c842804aca2686c844b405b89b25364d8. 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/DEZC62404836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32c8721a7739ef8d6fd38eb626df67331e186dc1ec179c0a5287110c6093ae7. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/DEZC62404837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f180bb599eee6d7293c372abbf52eb670a97fe830b8de553721a4d040deb3dd. 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/DEZC62445189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a0c84e0068db50b150c19687e471b46fd4630db6539ab1e8af31e9973287d4. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:20:07Z), 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/DEZC62592939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6314232c29d87eebcd40b11de4841dff987834a285dd9124d3332941f3c34b8. 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/CH7812421327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f4180932479ed49a914f1672af43b41179f664e9a2adeed47d891192de7d3c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CH7812423350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd070d329ae1ef7787832a9cc2f50efa97684b6a8bb031759ec85fa0d2fa868. 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/CH7812421324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5523dadfd5c09738ecfd9dead102f2f30a5b20b62a454d473547b13e9b5bbf. 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/CH7812423486.