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 0x91fdec88a349e111c9659c84b22ba25b961f422a05fb36dcab0195f58afd7378. 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/9aa7c985-d3cf-4be9-83ee-e953da2cfd63.json and https://artists.proofprofile.net/proofs/artist/9aa7c985-d3cf-4be9-83ee-e953da2cfd63.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 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 0x290303ad873d8fe13da2a414a87a4dd1a10889722db58c5353d4707ebf4a8686. 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/GBFBC1401181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd9c2ae56bb40de9a3bef3dac230aa44236fce9b59ec0268c4cd6b48ea09f2c. 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/GBFBC1401129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfb272857b5e95fb206231fcefbdcde189fdb1a6294916281f7849bf48b3b11. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBFBC1401134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda7230face66ffafd1374348c4f7e2ed918f0f8f865cb579f037675cbd1f415. 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/GBFBC1401135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadef4ae99347f676af7cf1f7b6d5aa0c19cbe085355d1c70dcb5fe56c8f5b7cb. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GBFBC1401136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc400a197d657069ee4bef719def96f47d0ecb843a2a5933e7d3f5ef8dc4167dd. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBFBC1401137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fff92abe8f5253c1a20a1eca67c85840613c6c3136da40b89e8ed6542bf146. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GBFBC1501292.
You'll Never See Me Cry (Spotify Exclusive)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311eaa10c23c9a608f44154623bfb0cfb2303f835dc10a2d590c51259a53658d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GBFBC1501321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbc53b58b8967adff773393e6e1696d763b671155d9a8a8ed15eff84444148e. 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/GBFBC1501323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029108aecd800a5a9a622800a9a54a35078c4aa1154b6d3e28f0158e9dc5e9f4. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/GBFBC1501319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6c3eef3106faac2cff59604be8c557ec70f926f7ac29f5a0be02beefcead6b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/GBFBC1501325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df20c300fb10975aeb21d536f8e4107784df99a46552cb1b395e7da8ffab138. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBFBC1601542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d5ebb0aaa3024c3ed21ec9744b0adda004055baf771601afc2699d3d93f504. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/GBFBC1601548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b464c4b6163edd3ca7a88b7d0a99fca4d1a4f5e767fcae895ce1dfd5a418cf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBFBC1601550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6d726f1f7e5560be2c8d4f71ffc542140a05d828bbd9cd7def3ac33b445a26. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/GBFBC1701575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170c507764e658d7ea787c3ba0678fe9fd9096acdd24965a3884253d6e482691. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W11618084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170c507764e658d7ea787c3ba0678fe9fd9096acdd24965a3884253d6e482691. 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/FR9W11618084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c761e1dd9b7a246da606db22bcab7fd751d763cd68eca5eac35bdcb0424fb0. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/GBFBC1701645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290303ad873d8fe13da2a414a87a4dd1a10889722db58c5353d4707ebf4a8686. 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/GBFBC1401181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290303ad873d8fe13da2a414a87a4dd1a10889722db58c5353d4707ebf4a8686. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBFBC1401181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574391cd9e2542d853dfab674b46160a73f304502f21bf8b15a1a7f6258daa42. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBFBC1401130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610f6016b0c97c3c63cb673e5e38370878af5413f7d7341b67e5d4b2cc5cf1bd. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBFBC1401182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd49699ac87d93da287c40d85d4875c3d0777be8950bb94836683a860a9ed69. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FRU451400242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170c507764e658d7ea787c3ba0678fe9fd9096acdd24965a3884253d6e482691. 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/FR9W11618084.
You’ll Never See Me Cry (Ambassadeurs Remix)
Future Disco Presents: Poolside Sounds, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0417ef889ccef12353543682ac76e38935a6b815d3e7549994c4300368c2bd. 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/GBFBC1501343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170c507764e658d7ea787c3ba0678fe9fd9096acdd24965a3884253d6e482691. 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/FR9W11618084.
Trip-Hop Music - The Must Have Selection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31219ee79178c3f19b05f9727d9199b4a94099775ba823785fac7c80349f81ad. 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/GBFBC1501344.