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 0x46ce46234b9bd935594a6a6d6cfc0599fa9516d20da3fa1616e15cf94a95f517. 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/ccdc64d1-f6a6-4292-9d12-cc7e14fdd1d4.json and https://artists.proofprofile.net/proofs/artist/ccdc64d1-f6a6-4292-9d12-cc7e14fdd1d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Unanswered Strings (About an Image by Laurent Batard)
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 0x957d8de90b313ac3367846c2627e9d980f8d40e18225f4e2be266bc7e951c69a. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/FR9W12225178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797ab020a33baa18136aa17d8962d8c500f784a0e28450041b1e1c7e89091e93. 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/FR9W12250672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a76e49b606886020e9b3f4da7a20aa9f51c4e58f7950ddd1a887b59b49ad4b. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/FR9W12415153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd30769815e527ef97b4811d68d682e1d686eab0f98e01e44969670aea30d6aa. 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/FR9W12414460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa946497b4f4789ba19758d3c1023971d1dfee5a2df2360c9ad0cf4781e1a617c. 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/FR9W12339671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b768f1da0b2f74d313d5e1c68a7d177d40195622ec240a00e0dd70a2ff8c974. 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/UKR6V2380657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a72dd865c8c72019090145cbada17b8d827a50c448ad3fb55fcf7cc58323767. 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/FR9W12320849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5151c112476d84d2b57eb66d58ed551ae64d80de70d24453c6f3423433f7f8df. 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/UKR6V2481660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52da4318c2fc94546ed8cd58720f3b3726a849c0cdc2a4f9e1c86906d4000254. 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/UKR6V2481661.
The Groundwater of Tomorrow - Stilhed Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9e95ff87795a43a19b1115c822916605ea252ad68a35cd2c5cca433afedc4e. 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/UKR6V2481662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172d9e52e952478564d111616bd963246a32f371378b196a40827f274d3ebb05. 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/UKR6V2481663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255c44047559e9eacc4fc5ebf380ce60fc4b171c0a5cc2d3565fdd893b469c2e. 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/FR9W12430148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387e8b07d1b8c09d180a608285b97f9c9c7d02fecb177fb6df84abc7cd2c2a3c. 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/FR9W12430585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a44d726e29283c36e8bf02b7674f14acc96b408d6ea0241bc1a64df209560f. 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/FR9W12430586.
The Silence of Pallas (Ancient Astronaut Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ebb809e2db4538a3d11355fe36da6323620ad1cc701b807556bcd47df2c8a0. 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/FR9W12469327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528211c33e1e88036e99fde13befe105fe364ae6766536e52a1e6db34e2fd00d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/FR1A92501501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f09f7900ca34fb190e03ea5c964d41194f55a18fa9095111d38a48474a2566. 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/FR1A92501497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d665cfd70425daa74ae281a98aebe76b8d63e6d122370e976a25a3748c2a61b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/AUKDT2300741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd2188a6565ca5001a4ea763e6e3ce83f37f3ca89445a8d12167b1ba566f8c2. 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/AUKDT2300742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559bfec3bf966f60be901e544e7e57e16d9065d31936b0b1735f77cf0f06d7b9. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/AUKDT2300743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61be8e80c33781a4680a7d00e0de44a1fc3321529d21305ccda49ce764c102eb. 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/AUKDT2300740.