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 0x80257b14c814309a785f7f8dceb7661b960e61e806a2fee407f5916692f35960. 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/a1ccef14-0b91-43bc-aaa7-a3d312727417.json and https://artists.proofprofile.net/proofs/artist/a1ccef14-0b91-43bc-aaa7-a3d312727417.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Don't Dream It's Over / Everything Is Free
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 0x3fd811361eb06b6fa88748bd235507fadcc779ba6a297f835e6b59e6fefec6e2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USBQU1500665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff79a797d4d5b582325a4fc5246d0e87e7c2077e9c4d2b4a96fdb6e35b81619. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USBQU1500666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31764f0fccca48e6c6cbe48205af82897a26f25d9e9d86c4da79b89c9b221fc6. 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/USBQU1600097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3e59607a4392756330eb7213498f8d91fb7475179a6420e802101271d0655d. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USBQU1600098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d16e572aab490c30c9edf110a004b0f8418ed76f290e1666fa1c223a7140420. 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/USBQU1600100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3911bf2c9d5c89d0dcb98a8a5a9867eb0ab7526b7fb4fc1d9effa19d2f5705ae. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USBQU1600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe562a28bb0efb7ed578b25fade9b531939357ea08ee883109cb6bcee8a47cd95. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/USBQU1600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ef144fd531c5371bcb03fde32d5612c83c3f153d21439f77c56160112cf486. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/USBQU1600105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2683149bab894921b4d84ff1be6bece1f170c8b0ad493bc3ec628d48ccd3defa. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USBQU1700158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b56cb89dd4a63c68a68f98ea4177401596b94a9784c25aa742a4b30d55bbd62. 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/USSUB2038402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f30baf2d617e917b93eee9be0df6d76dab973e482003f3b9b115ab1d2e94a74. 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/USSUB2040501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb375daff2f59ade9c09608b8a2a288fd9875386022a31b62e78baa51408849a7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:03:53Z), 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/USSUB2040504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562ea8597f9c378d8405b8da632b3eb1ed8d26939a9be1eed4457cca480a7d6c. 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/USSUB2040505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81afb38cbede0c9c21ea6ad723c7eec53ef21654b3e1568c0f67bfbbe451d8c6. 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/USSUB2040506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa074f3676ccbc73d8c68f251b6a2340694cbc00206b2d097b2dc822cefe37fc9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USSUB2040507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45db9245ec66b44188e99e81ab950063fe41be49eb9c4cfae75a2f745a2d1b47. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:10:19Z), 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/USSUB2040508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad8789a33c4a742ac70a01eeb62e8f476e326c2e3ff84ee520bc926465fec25. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USSUB2040510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b436a498df0510f24efa925ad777bec009ff106b8512f861e31da56b482ddf. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZPKV2202201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06bfd1ba8b9dd60cd4af5f41ca51030caafda8e51fe29e38b9961920bc7269e. 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/USSUB2250916.
Ever New - Reworked by Bon Iver & Flock of Dimes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa02df306ce31f84293fe04c4d62b8cba4d2dbe1bea7f1ddcd952c576aa3d0e2. 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/GBKZV2100115.
Ever New - Reworked by Bon Iver & Flock of Dimes Single Version
Ever New (Reworked by Bon Iver & Flock Of Dimes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbec978d68d38d980fc7b3919c291c54f3ddb0d1ac2686f218cee8f48addf661. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKZV2100153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa02df306ce31f84293fe04c4d62b8cba4d2dbe1bea7f1ddcd952c576aa3d0e2. 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/GBKZV2100115.
You Think It's Like This But Really It's Like This (20 Year Anniversary Reissue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93c256bf8607ed954f6daa117d295292d146568f2285b0acf4bb6d9e3db7de2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZAZS2006910.
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