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 0xaef29de829d148ee83f4d0631d3c9e65bd367d9cdcdc060c63e16bc6cf48542b. 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/eb846bec-afeb-44ac-802a-0afa6618fce5.json and https://artists.proofprofile.net/proofs/artist/eb846bec-afeb-44ac-802a-0afa6618fce5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
It's Beginning to Look a Lot Like Christmas - Fireplace
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 0xfb6fc2d15443eb7d37608a868d0ff1b399b1cde912421bf6b01494f6f0ef3221. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/QZFML1935022.
I Saw Mommy Kissing Santa Claus - Fireplace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b10ebe5cc0cc1493bc611f5747e16f05b4a204d5ac7e1b7c8a4847e72543f68. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZFML1935029.
It's Beginning to Look a Lot Like Christmas
The Christmas Song (Chestnuts Roasting On An Open Fire)
Have Yourself A Merry Little Christmas (Jazz Lounge Performance)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98ff7709b4daf46f9134fe1aaa069bf77216f8c556bc4d3b420438927c9da5f. 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/QZFML2035003.
Have Yourself A Merry Little Christmas (Jazz Lounge Performance) [Remaster]
Someday My Prince Will Come - Piano Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb038419ae7daf576dc7d403dc9a94274b28ed05c8aef9a3d07abe19e23db79ed. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZFML2150004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2364144f81a744fa525a8c2a2be1ff57f0e782dbe3a7ea57b44b71a6faa7ea09. 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/QZFML2150008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d87c01b598d6ec2a6da262fe75757787ffbf29852c0990696979ffd0e3ab4b. 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/QZFML2150009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003634253881de6dbde87ed9839ef1ae2fc189591a165c8e99707e78dc014604. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QZFML2150010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23751ccb2f01038b2e5e7e0e39f3e09afd78e8b33dbd9d9b0d55caa452ccbd5. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZFML2315001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9634961f33960059ebb0538583abda9e15017d3d3885e5d2e9191a669137779. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZFML2315002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd65d13a82a182b7db5d8bd134a010a0de0b4261346acbc1dc01fa0738a7538. 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/QZFML2315003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d703b78178410fa24ee84b62e8db3d360112214b5ead2b65a0534eb007e913c. 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/QZFML2315004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a4e81329f7239c901a520e23bdd27823c7eecbd96516bbeb91054de6ca3142. 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/QZFML2315005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6652ae6f42ba15319944313bd3e3696219e5dfac991981681370cc942f2c617. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZFML2315006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a861f3ea07ab9cb7960db9d8a7bf0de37a8b4abd97b22fda7cb9c1353349245. 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/QZFML2315007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d67f29f58cd16a5e2b3c58e934ff4ec3a9c27c5c3787a46583e5120518eb0c. 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/QZFML2315008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b820edd7befd6dad08b1ea71b9ad6d8f3e3cb75a091c739aec3102c51635dc. 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/QZFML2315009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad158ebfc9eee5f268fb5ca163f4197e71c93e14a6b659d027992c911e59da95. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZFML2315010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec4d5d246a88a6b746e0274dcf35b30b865e612a76ed07dc1eb5e15680f910f. 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/QZFML2315011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8e6a7025b19745850e36d7d732450c2784e63af884d7113c3a5a4c22f5bd7a. 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/QZFML2315012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e82b199017d2a6d515e7d0e33509dd261148b63c58ca559f26058efcd5f94e4. 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/QZFML2315013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8b295950b673115b9c8e79fe2f85ce7afb31841a33f7bc737111dafb40155e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZFML2315014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ad0bf9a7fa5ecfdaeba823c34895fd9e151b66b8c9ee52d30cb0400674b0ba. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZFML2315015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d10ee57be692bece228f966ad57cb2602fe9e672d5d33c14e3326cd93a870fb. 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/QZFML2315016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409ff7e9893c0fe32f86e6449d601253971b35979d78ec1c0945def155b66fd4. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZFML2315017.
Eleanore Rigby (Jazz Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa895eab8b750a94f3523d07a5a38c343945d280583262205b46106efd400300. 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/QZFML2315023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17711f9b17a1f3cc7a9ebdf53518b809ff399a45cb759ef2255ff0c1ee7e7d43. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZFML2315018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8d211d007f2f696f12289addadc1f6f4f3326aeea4e76fe5b91cc080f4f3c7. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZFML2315020.