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 0xee55cd6f85d5e278d030b31ab0a52377220022af943121742d512f625f1e3154. 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/7cdee45b-c23e-4de1-98cd-0f438b23a48b.json and https://artists.proofprofile.net/proofs/artist/7cdee45b-c23e-4de1-98cd-0f438b23a48b.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 0xd768ad890e60c6a197dc94024a501454196f870fe738d86ab2b01046b227fb4e. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/DES561720901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c9643c2501aee0b600b76e97b016512834cb379438fefcb7f034ef506eeae9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DES561720902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b1fc182ee20aa0ff0ca9280b4c134cd1057ce676e72d4240b98e3354c6d6b6. 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/DES561720903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cd19edc6b7f8906d02745faf43034d05e8d4cbf67c5ed06363f272be67bc5e. 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/DES561720904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979bec96be8d47910621dd4a9eaf2df6d754a14cfb856810075b66510a5266f2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DES561720906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f289e36f3a28bb08716d32531fcb8feac3d9d53ba26376a3561db6e205739c9. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/DES561720907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571f0913569fbc3f996b5efcdec1c4adb956cd141205e5476fe96fb7dfce0974. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/DES561720908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76ac3b94ef28efb705252d90a0c0d5d37ba5f3cd73d70e09f0442bf69fb8016. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DES562028603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd894976a0f3ea99c8fff8fabc4fb21bcd3fe63b0ce49b819aecb8d9a52622d9d. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DES562028605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed459a3d416d6047d824d2962a3ed5cc2f1406ad004d1e1ab08ff02345184fd. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/DES562028606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6613b3b880537d965974cc77c3a4f897b8add3e6464987b3de932790759c743b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/DES562028607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29072998e446013909ef46c393cf9d3033856ecfb7853ba6fd445cf573300489. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/DES562028608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a265a2ab85a9896deaf9713f787d529186db94feb697760e7f1127a40ecd62. 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/DES562028609.
Visions of Summerland (Live at Arminius Church Rotterdam)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8065087ebd5c9f1be9401e1c372473e213998f56cf89ec53610d25adff34318. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DES562411547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e80df97760a24d33b246b190d5a2dc971f46fa86f7e95439fbc9017da801cad. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DES562411548.