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 0xa79e91583c0b2431b0fd8f2eb2eb22eba916b834fddcb5a63159ac4d33b185f1. 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/8c747ebc-0644-4d9d-8f59-f8bbf8f51c85.json and https://artists.proofprofile.net/proofs/artist/8c747ebc-0644-4d9d-8f59-f8bbf8f51c85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sounds For The Silver Screen (Re-Release)
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 0xc027695bfabd4ea5ebaa42c3b78ae1d7721011978bb7a1732877d6289a642e4f. 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/AUMEV2219876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce6a9f5b5fb8d6f782a95902ce2a4e7cc816065fe93c39ed39fe6a3212ab1f9. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/AUMEV2244861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34083f5593edb89211d12b25bbd20af0b337fb067cead8c101e3dfa682403406. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/AUGBT2222824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297f9c551216d0e10054c6705e4e38a546b1f4061cee309af9c75c65419f7319. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/AUGBT2222826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abc0cb0b612802c256e3d93f5f3dc5f9ce860cb704abc17ed26360a5b2051d5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DES382514001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cebf82b932b0ed6182e2f66697a2e7a3a91bfcc5f606e245cd1d9e80579cdc. 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/DES382514008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338512497ab8b5c349f4ee776211931eecd73b5c735f9cb2c860537b93a20587. 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/DES382514006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7c8df02ff10eec3388ceea59df2639b9716a7c007609d0f03d52d934976949. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DES382346001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f494264fff0b29b79d4d688fcd58a4e673bef5f3224e5b846d530ae9c31cae9. 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/DES382346002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd108a0c9a5efba415294338f9ddcf86432c08835bce7272abbb2fc92517904. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DES382346004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe147a7eae62a3443b3d3f54171a57e3eab9440d195f6c2ae113211daabc1692c. 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/DES382346005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4a406c59500df550847a7220304a79151353f943e868f71d602f1d2049011e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DES382346007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cc1f817617fe0fa50775f1f90aba8dd32756b74798d91be1411469b042c02c. 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/DES382346008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1373f43849afcf578e6aeb63f9421facdbd47857109b3448657d35798a67b2. 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/DES382346009.
Re: La Bicicleta Roja - Arr. By Cenk Erdoğan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeef9d616fcab91a8886ed86f0cc1b2a67cdfdff9115a2ef19ed7d5a11ddd751. 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/DES382346010.
Re: Kleines Silber - Arr. by Bjarke Falgren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8850372f9b52b400405510acc5ba1dfd216cd10b5aa5b38fb921c61033a53acf. 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/DES382346011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5113c54e43284f15886a23e66ab316089768714fc87ea195056c1bd801833938. 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/DES382346012.
Re: Reflexion - Arr. By Damian Marhulets
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ba89575102b2f1ce6008bcddf2a4d13ab227b8ebf85b98e0aa58cbac920190. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DES382346013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214d5404ad0b251b66e2f332138c0b5860f90f15a88ab5911ccb7ca4864dcbe0. 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/AUMEV2219872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b5f4e43840ff0520e29e6d2d2f5e6b0ef5ad8d13796a60db99780b2b226632. 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/FR50X2066403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd20e8a33b64ad787294a4ed53ff702bb7dda77adffdbafb98eb9b8aeac1ba4. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/FR50X2066411.