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 0xcecceabc2f53de9ba99d2a6e4e358494eac40da6b1dca1057e6f29617789ebfd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f052fcc4-94e9-4553-86bc-b06c81ea3d22.json and https://artists.proofprofile.net/proofs/artist/f052fcc4-94e9-4553-86bc-b06c81ea3d22.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 0x4c027c47acad30e7d02778d0c5405eff2f8deacb02d4f0bf19d533c1e89c46fa. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:08:52Z), 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/BRPRX0300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304b8c51d8d79faa22ed067889b78a0ee254d9410758703f1fbb1f0c84ca735c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRPRX0300307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227d51f78ce6df0a9a05f6d8b55ed04d27ada981706ebabcaed0b52875d4f394. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/BRPRX0300308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc4a70bd00a62320766e975fb28e58e145aed21729bb40ad102f138b8c7fe3e. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:06:37Z), 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/BRPRX0300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758d8e768061b541e9fd88a31e210baa7ce910c3b9fcab8680b87df226ac5a82. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRPRX0300311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb204a627e20b7c8c986fea86895148d9eb3dd15cdc322677d206cbed2049892. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BRPRX0300312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad37684d9b2a607d5271943536ae65fbff5bb4a9041508c14525ebd6c2970c53. 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/BRPRX0300313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e98b9954bcd85647cc363d4f46aa8d2bc6384bddad2b65aa61d212e94042c5f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BRPRX0300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ffab635314e129af93d77583a37c06774cb6c392048873c8645aac70159d69. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:58:22Z), 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/BRPRX0300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5aac7a6c96c62d40a5ddb7c32a19f3fec7a4a0c889396de1070ea4895e1179. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BRPMG0400397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30d6292b394728d3a2db97d46555b58c9fe42b9a154b6ba3c3615b2c1d25709. 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/BRPMG0400399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0290c9a44f88a9ee53bbd0017cfd97d3f484dd42cd04b56efeeea3edb820883e. 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/BRAPI0800372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3f42cde5f02992fb9735931f47b05cbc5c358813626c7dc2306cf33df69972. 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/BRAPI0800375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c91310966b1856159b9fb69683da6732a6fa2334f72dc3429c40887d4dd36eb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:49:55Z), 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/BRAPI0800377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929e5cfa2f94e4478801556d747b11f016106483e324c2b12e51ea6a4360ebb6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:37:24Z), 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/BRAPI0800378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8a390f8079387af0da24363f4fe849a373e8e12f56cd744609980e24d441b1. 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/BRAPI0800379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321cc9249a3a731cc50bd417a62af10306de690bae7c88cb15126d18f4bd4cf1. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/BRAPI0800382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e9ad4a92a7a609e88c0dd8419172fe4157c51c5cf3f370f27531e797fc7008. 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/BRAPI0800385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a0b693aba076d8f9f56f7860f494ee6cffe358633b70b743cadf807289b641. 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/BRMDM1400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d86d1a4866569620fe7421f01b67b289cd78b76a16d345408c9fbc84d458d8. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/BRMDM1400040.