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 0x1c969c52bf52b247c5aaecd4e8cafd4e369d21b4a50ff930d901bbf9929ee0eb. 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/86153ed5-0714-4cb2-94bc-efeb2da02ac6.json and https://artists.proofprofile.net/proofs/artist/86153ed5-0714-4cb2-94bc-efeb2da02ac6.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 0x5a159d3fb38e9875626ca0b852a6c2c8871610fb9015b7de07a8f06dab151d26. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAAY1122643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a157175e31eb060a1169b2bf35e71b3e8277446155e9ef7137fb80c5f3b48f3. 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/TCAAY1122644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bab7a88525f5752fddd5f6a6a501ca97d3eb40c89a2b14f7982b76625a54f94. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAAY1122648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4601aa46dd03903b19741b5bcfd6652589d1b00b5d03005e93cab73884462206. 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/TCABB1161766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe4cd92e2276841c0acf35e17e5f6acae5c3d16d27ec06d1427af3b0e586ccc. 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/TCABB1161768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe612e627001c160f0539888d1783a8da2fd76c1c54dfe352b93c23e339f7f3b9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:38:39Z), 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/TCABB1161769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf38bda1e30f4a794e0ec5f4bd19d1a7d579b7d4f7bf4563956d311a4b8e4d05. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCABB1161771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586e25a1d39b9c740cc83972bd987af9bc3a8697df0e7eb451ba201e790b740e. 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/TCABB1161772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212c0ae984497a69c6d9c377882de840482b0812e7d73a6e8ccfd5097e7fa3ca. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:49:33Z), 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/TCABQ1364298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f31587192a7dbb83c523d6831efda8f3be0bdd6b21a1f362581bbb4c9db1d44. 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/TCABQ1364304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9eb543b9aded32a32beb9346d6c7f52d1775b69a97af320cd1a7438887b95c4. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/TCABQ1364308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8044e290c70eea864d8230d95755cf0ec995a06b5f3d618b14cd75b7925f0633. 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/TCACB1463609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cc2fa324c2d2f74647a90a7a7a4c7aa139ae442472dde7e4da8771fce33e19. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:41:29Z), 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/TCACB1463613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9707a9295e176db43204b8447d6b1678b3a7b43bade2cd6a2b79f506fe9338b4. 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/TCACB1463620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb53656c7c453f5a33d4618292b2ff96742d907508b1c6c2148423486d0bf109. 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/TCACB1463628.
Autumn Walk - Orchestrated (feat. Doug Hammer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3388e53354067b08cb7ae476fd258c3e21e15ece7256897f8b27aa35b292e2e4. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/TCACI1537168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9c04b2db51a389f158881a2f23bc6f1026819f8111188075b348d04fa8cd23. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCACI1537188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc258bac44d859e912e2f4207b2cefca7d53b0fd4b1c1eebf74b9e57e107a0e17. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/TCACM1618869.
Thanksgiving Medley (Over the River / We Gather Together)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6480625bc16bf172f5cc5884c616b9b4b88559dbe6eecb78db8b4f103e518b. 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/TCADY1809437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bef461da0f435bd1f3dfbd46aff87b48a9d0b2838e157da3774f11256db1fd0. 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/TCADY1809444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee552da7dbe2d1b379321dc738289f1bfe2e0984ca758dfaa2640fef1fc2279. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCAEP2031437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63df09eb6d9ac6d502769f10ce69fc409658a8c006739349d86eb26b759d39e. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:32:32Z), 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/TCAEP2031440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fe4ab17f4756da12c3f3193cca0b8b75de33ee333ddf7e1fe16da729035c0b. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCAEP2031446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e885393da4554d0eb82a70383fbb791647ab7a85b9e9a9f4005b0aaea308f0d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFP2161120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b76ca4419da68017bb8f1b41aa59ba9e350a2d58479d19411e4d8adfe5b426b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:35:57Z), 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/TCAHH2392308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb987b99b3c93bfbd47198e05ed57c6e6ed06eaec1e5fd3d7bcaada162ca7306. 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/TCAHH2393140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cb4a5becc9956628682cef99e0cd9afb29c4209f9b1b233e9b77bfb2b4e828. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAHH2392371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019546769fa65cf01c1fd851c1e16882cc1e4289951460f5d17db58db46c7f92. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAHH2393143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f52c80880cf5eae5a5eb28c2f52791934cf037bc253604e03cb143049c2f01. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:33:11Z), 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/TCAHH2393146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481504e149a8b8b91ddf988a4326e689f0bf74744df63bfdc81fd954fa5f6e0e. 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/TCAHH2393147.
Christmas Homecoming (The Wassail Song) - Orchestrated
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81281812e92684813e0b71335f236ac93cbdc411fe1bcf2b64121a13ac3ed04. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJI2593620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f174519d2bc8a1f69bf37fd01b0f2c920190f78fff3c21847da1c86d8983870. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TCAJF2556389.
It Came Upon a Midnight Clear (Orchestrated)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5520efa93dede4286078d95afe5a8f34f6f9ef49f91409400048aa63219f3e. 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/USA2P1005419.