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 0x4c52560e82c881de79325d1c00b9a93631a549c8ca4491113cfbb769f858ce03. 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/161b3f2a-2b42-4ba3-b63f-03fc3a68a9fb.json and https://artists.proofprofile.net/proofs/artist/161b3f2a-2b42-4ba3-b63f-03fc3a68a9fb.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 0x5859f86e73c723cbf602b9ffc888de333f8e6c55bea04f94ad124d8925adf4a7. 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/DEC250061610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c86e0ee392125d8419c328f861a24f71c6930b343276b240e8d69337b22b96b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEC250061620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87d0d61ff98cbca821490d79e28bbfc5e5cd16ac0cddad48e1899c537559857. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:31:24Z), 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/DEC250061630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef6eba53690dc6f263f50af811be4c1514c75ef639926acfae31e83983074b6. 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/FR6V81021621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34176f54df7d730e9f31bdc968387fad3d051405d95012a7e04374852feafcf5. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/FR6V81021623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a5403fec4ed8e860f672f525c7a002da4a9c5d7f742d16689851a4ed32f1bb. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:12:44Z), 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/FR6V81021625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72e033bf84ce78be3264ca8368a949e9d9aef3777b0a6b25b983fb9204c7a62. 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/FR6V81021626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a4044a87e5a8a4a937214a040916012425537d5df25105fd0847839bbca334. 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/FR6V81021627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840c24ca8d20ecf878698887fc8c9371a5860382fa4a0b9de4aea98f290f14a9. 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/FR6V81021628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218e2bc6be1e1031c36154fdc1f191ea3ec131617024b4b6cb47f5f6e1f857e0. 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/FR6V81021631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a4da0ec7e002eb3db94f02e38ad18164aa063b0e2ca97a45038f5f1f8d9dee. 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/FR6V81021632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ede0cf553ffca6b20d4c90a950bfdb4d47512dc97f2365db1473a36013e5413. 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/USHM20357387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe610d0305311beb945b8d512da85759130716821d63235c1be50388b9c102c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM20357396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa69ed6b49f03202cd33632c19a7b72061291d8ad4696279835487fd4bc39005. 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/DEC250363180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e786b0d8a70a60c9edb9ca63f910763bcb489ac699b23ea77eb81902e9f74d6. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DEC250363190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fabcdbed17cb698fd538448d63578d2cc0248967b12aa86ee9e1e16318fe9f. 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/DEC250363210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe367abc9b489253877dede3f002dcdc287c578907c19cb3e9e9be3bc6858e655. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/DEC250363220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc86e98c335bc5c5dd680ab57fe38c6bceb82de63a084dce6cde1b48d025dbe. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DEC250363230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65674d3ff1eab160c4e11e616f39c2dcc0612fefbcbf93f2ea16f035d09448d6. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/DEC250363240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f8e95ccd83d7ddbda8568722230a2f5c0ab3b6b77ca83202876909ce13b800. 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/DEC250363250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b300d72801b6eec9824392064b30a5c96fd9c15fa6a5fa3984928bf971420b7. 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/DEC250363260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6080e6e9b63df0761a8e5433b5aa368694e582659cc5210672512f6e88d17a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/DEC250363270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5e490c9950e19fd1ad73975481bab80f747ebbf83011878ed5214b5bf37d71. 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/DED330536820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe053b5e0b470b7ec445a597b7c5c8dd32d46940c2c26c058f64b6974f73c035b. 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/DED330536860.
Damn Good Run (The Best of Chris Jones & Steve Baker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2577cf692def50a07d48478ff78833398f7a62cb24ef5da6f0bf93df9b09cadf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEC259660270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd63c4f86bf9fc4eb44cef7b1954e0a191cadefc714128f4dcfcd49f3c067d7f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEC259660280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0eb6ce4929f3e0781f9962d97ee5e1eada76d60289e07ea46512f3a065933ce. 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/DEC259660300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e1c7514ccee14d0ee5d9a48170843cf1f6ce2c93346cd2d9cd9a2227f3d26a. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:53:12Z), 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/DEC259660360.