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 0xc222b32b21c1ecd424e6a471256896ec8b3e540d8ad76f623b5510b29ed9f63f. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ceae583e-aebb-41ef-a5ba-7257b9666376.json and https://artists.proofprofile.net/proofs/artist/ceae583e-aebb-41ef-a5ba-7257b9666376.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Between You and Me (25th Anniversary Edition)
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 0x465ecd5f8a8829656ae0bd5a935b5c959f0d3105471da3fa527ad6a11d1e7f22. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMZJV2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef75daa619157a834faaa6fea48337845520f9dfaee72777894d37d55827e43. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QMZJV2100001.
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 0xbc883900cc4e0c8cbc623b3cf93efdd881ff8e01debf9d14b9755078ad782042. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QMZJV2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc7224ceb1ebe01ac205abb7089ec4bbb5d5095b788ecd62e9adcc629ce8d1e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMZJV2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620b56279ceb21588bc06f2d0a51aefe01a1d4ca6730a78b32d96d05de58ccab. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QMZJV2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c6d26a898be4c132cc30b40cf3a38d84b08ebb063038ea1b38ecd4d8bc908b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCGJ1254105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5743be39498c133709c6a837b6c0f26f7ac26e37a8e0b4ab7ee5f44104e72d. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USCGJ1254103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7078b66cc65060b3c60eef0b205053804247c32d617dd795f92bd901a6af0f7a. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USCGJ1254111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27095f45d85ead126a4ed58401dc34443ab8f6c23d70049496aece9e01f08006. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USCGJ1254113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d872f5075cdb8c1fb2d890fa8099e9b12d84371ac64b0c156328aaf15150719. 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/USL4R0776423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dafd4eea5e55f18790eae6353fab2a3987c6011f7742a195c8327b15f04c02. 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/USHM20811969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ad43c1720a3b5ae921922c1b5828e816a018d9485c346c4d18727c7491da7a. 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/USHM20811970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7b6e96e47fe9c98ead516f91c5c73ca0bb318ce28900d8179162d69759c868. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USHM20811972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37067abc8fb6f565bb421ee4e2e5413b8b5adecfa4e3280b64810ee6818792ee. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM20811973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539123d90cdc1e97a4ffdfd10a03ef15eeaa0ef62949adf1a692fac2830aa835. 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/USHM20811978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebde2de20438a897779efcceac840b55208561ab4ed912eea05943bc58461d4a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USHM20811968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c660134ad473290536d55310a9e4b0d5dc4aff7b679e7c876864f1a93aad02c. 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/USHM20811974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0479694a9469764c6fc0e1a8651bc3ba096b8cba2108eb888cb5e3ff16b7dfd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USACX2400112.
Angels We Have Heard on High (feat. Jeff Lorber)
One More Christmas Song (feat. Andy Chrisman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa371a99da0d4137a8f30b125c5b4a1107db8efb7021107c0d1a55e251a9f5bf4. 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/QZQCN2100004.