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 0x673aaf5a0317c2a4c87b4ce824660aac5e004dd0a57570e06333cfa33d024f77. 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/1ebdb587-c65c-4fec-9880-5ef749968cdf.json and https://artists.proofprofile.net/proofs/artist/1ebdb587-c65c-4fec-9880-5ef749968cdf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Right Next Door to Hell (Live at the Underworld, London 2024)
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 0x1e2961edb7f6bf3f6de746c337e2e1b30188933d95746eff2c4ba0c12201cfc9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAIM2468601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718aac048de0503116375c9ae8ad3de309aa75a641077630b1b5b423b7d8a00e. 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/TCAIN2471910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208aa9e93172576973b18e80b673ec459df6ffb2c03bca2b47fb7227eda9f88b. 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/TCAIE2407091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e729774625e3052978394db3d86770be0618e98f0e65c45d44aa6459606839. 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/TCAHU2468039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c48a6536179ce0325bb3a6064ab5911e24417d507ed069784670bd89bdf5bf. 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/TCAHR2347443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60350afb3b1a8e9dbbe782e9a3f5f2b24d91266267837205506478d338cadd2. 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/TCAHK2378424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487909e6e9d91bd2f264c8f7adcea491c66de9cb091466bd7c128ab26e937b53. 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/TCAHE2378080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fc16d5e064389085e630b58d19c9e7161eebc76bdc0d0a9e433de7de0adf7e. 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/TCAGZ2394596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b29a88228356d58c8eb7a905f3e1c08b38b18f129e5f0a7b789a98d5a15560e. 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/TCAGU2322412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e02b9b19dfb88e6c6debea1b041e922b4f8460a25fc1007f48ecc09ab36ce24. 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/FR4GL1039788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f14d04d11bfb7683a98b22ae19b732b3ceba27f0f3365196c6bdbe412ea9bf9. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FR4GL1040707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7b374b54cdeca30123e631516fc9afbc4cb9544d1e6cee27b95b9ca6c4c538. 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/FR4GL1064204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41b26c0d68cbba28c51f0b9463b634673092fe8480e4157a65363a66f2783f4. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/FR4GL1069284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47409b00dea1db0eb5ebf4e919590ecab909035902bb4b47df5adc28e1cf9a4. 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/FR4GL1070184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e40fb837a3a930088590a43f376133a4d1a5fc3db58707c498203ccba358b59. 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/FR4GL1071073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec07b4d6b3211ddfd9f4ecfb3235dc7b2d895163a9afd8ea5922c4339cae317d. 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/FR4GL1075567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9865e3a5242db170b5c76d0f34516da8cb4e4b513312689f2f643b7b56109e9c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR4GL1076409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b27ed4d1f5aa9eb519eb394f63f49bb459537d8dbe0724db98c98594b91621. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/FR4GL1078576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5f4c8c12166ce44fb5c6de28efb508f4d01bc805d5239efc2bb5d76150ad16. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/FR4GL1078829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98498b03d3204479dd502bd49a484a09314b08522825b967960cd8fbc087c05a. 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/FR4GL1080642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2896aca59f73fe49268a2d9176052f7f4bdfe917e4331ddc3186ac4ff43359ed. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FR4GL1079921.