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 0x432dde98eda10a91b1df5cdaa07c35a49597d4bd5da68b019920d161da19ab28. 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/39c23541-ca5e-49f8-ac13-f7518143e128.json and https://artists.proofprofile.net/proofs/artist/39c23541-ca5e-49f8-ac13-f7518143e128.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 0x40450476184f201a1838abece86b2e168659aaef315f760b20959cbc987d2bfa. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAEA1803276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fde2e2e94ba15e38fe446b35b5b9af8edf6d4ce2c87b7093d2cf2f171ca6c53. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:10:15Z), 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/TCAEG1960117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1c91a3da1e6e0f34d2c19ecd6fe4db20340d6aeb9565696242238b051080f6. 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/TCAEG1960121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a33801dbfb7f27b22679e9785ed4b2d8703b82fa95210f1de1918b84aa74c6. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:09:13Z), 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/TCAEG1960122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb675a83da7813dbb24269db70e95598bf6f3f25270ca6b38b530a5fa443b095. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAEG1960123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd271c728dc05fe0d025f56c00dacc39b44279bcc13b4d20b8aac5afc6af5be27. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAEG1960124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8eb7d6d0f3a696b9c67864a945be613076660a7185ea7fe3352d1b839d6a0cc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAEG1960125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf94af389fc16a11eb32c8cadfa77caaa278ac66c3b892216d1c643b89cca7a5. 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/TCAEG1960129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d04c27a82a31a53d739f2c98ccee9252c38e6d39c30df4b6060a6231a5ba80d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAEG1960130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce5d8f6202c32a8d5aa4add41494aa44a72bfc45c79555196dbb821705b6d27. 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/TCAEG1960133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb976c8813232faa8960273d2d93e0cdfc9f29ff9bdab6ecf200bdca7a80bf078. 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/TCAEG1960177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5076393c64993c7acc47d1c5f55b31e5a0e5ad01123f68138551b26696cc45. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZMER2069170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa8cdf921a01bcb1e6afb658636dd00af9675c4c13142e5085e38529a66d79e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZMER2069172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b128d7022cac8258e342d193423928ffc3c863d2e95f8e343aa5bae0a5f7a56. 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/QZMER2069173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1748d55a3ca4b886e6171ae94bfc097a3918bb23158409f3b754da9297b34e. 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/QZMER2069178.
Alalaska Patagonie, la grande traversée. (Bande Originale du Documentaire)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f398582f93ea0ed9b8a7e3529639f7c5605fe2bb85387dbb958a70bd16d0c2. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:46:20Z), 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/QZNWS2018521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33f4c97b5e710078eebd92c4451e98f493b08789cd5e70fe882753c24afbb2b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:31:44Z), 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/QZNWS2018522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74562215368a77dea20b271b700ad4f180ae8e883f8ff4fb6ecbba9344a91d6f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:23Z), 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/QZNWS2018526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74c5c1594715d55f9a9178bf6e3c406cd3dccc81969b611e56a4e25edfedc3a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWS2018528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaac742da27563d9b1082efa281015d0adc4e4364323e86ce720f86328837767. 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/QZNWS2018529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d332edab0b249b0437b1c60830bbbbdee24f2d45af41171bedb996f4af9c157. 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/QZNWS2018530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6a3c2eed1c18c489c8fb719d081c1ef2be01db508e7283db026d3673a9f847. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNWS2018531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41faf6842683383ce9fd3717558a62f07ebafd1ef74d8ebff20bac5dade677e6. 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/QZNWS2018534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6160b3d8d092801e03ae15fe6bb075e744328723684dd1ecc7ff5bd7449961. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZNWS2018535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4cf7c8bf5a529c998e80f6cf4ad8d8d3edf083b4ba1209009939574b3350d3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNWS2018536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f13bcef70206df644252b338b31ea6126c468875b3f8b362fa519c5eaa195f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:50:34Z), 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/QZWFH2338809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d45276bfab5c4bd48f257cc5fee52b635e280c8cfd798a72ca477dab132656. 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/QZWFH2338811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcd6f40749ecbfea576b3d9cfe046cd4483880d007f41013d47f204262099a2. 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/QZTB52328630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5d60b15550f3e96559ff42b562de701fc3f1e1c58c9858ceb8922809a31602. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZWFH2338813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a9ca3d62a58436f5a4660a841444d2b0e50951fa63e8e5e7f234a0acfd9fb8. 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/QZWFH2338815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0176112e0d5fe1a1f01a8bd6129ea81b710da8cf2df25eb6003910e32552ae37. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:01Z), 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/QZWFH2338816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59717db12068fe5140b88442198e91bf1152c423f64b336d865e0b6e9cbafd81. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZWFH2338818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256e5727920fddc116a5ff4cf62d9d21be53e36b97e5f5f0e4c8141325efa290. 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/QZWFH2338821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4e6894b1a2cdf5565515463cb8f32151436975b1606ea576dbe803b910c68a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:44:57Z), 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/QZWFH2338824.