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 0xdb78d7d85ecb5c60c9cef683a01f375f342e8f0d7a7af3638a63947a5fd6bacb. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/056b3349-2d5f-4790-bf1a-22536570bae2.json and https://artists.proofprofile.net/proofs/artist/056b3349-2d5f-4790-bf1a-22536570bae2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brigadoon (Original Motion Picture Soundtrack)
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 0x52f2d7a79f7dd1b663eb37117e8682fb956a1fe7feef3acb87e965f029b7cb75. 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/USNLR1300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e10137a3f07797fdeda52c46db94d0af71f090ee0193b2fa7a5453e66af3b3b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USNLR1300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4326025b500049118f537f1653aa19d767927d379ecf5c5f59924c94b578aff. 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/USNLR1300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afd3624d37ab89201d0c143d07ec7034d368d6d99cb89f914d7114f1219f41a. 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/USNLR1300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f34b950570a5a75212c9baefa1c19229884733378a5d7c27329e03b05bfc3f0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USNLR1300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50598c08884dbb89bc799120757cc1345ab6dd969fd6c53c324056c806c2d058. 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/USNLR1300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730af764d283c458abcd52740a4dd1a2ccba8fd4f1ffc2654dc2bd3fe660761f. 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/USNLR1300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889278931d8c7c9fdff1ed0b7f5b6b38671c17d1adb547280ff1a92fb57db57f. 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/USNLR1300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5686c9b6509c619fb1988a4fb2ab869fe2e3cd093801871e42b0361575cfdf19. 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/USNLR1300080.
Heather On the Hill - New York - Reprise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3d9275875d30419c106245b3e25852f7962963b0c7a57a6f93fa7d1b529dfe. 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/USNLR1300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a74b751da5c8880f2b4c136d5912392963bed083e5601eb60a8f23af338ccb. 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/USNLR1300085.
Greatest Musicals Double Feature - Singing in the Rain & Brigadoon
Make 'em Laugh (From Singing in the Rain)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874195e6cb94d10fbbf73fc202a8c831dacdec962f6ae6fd185375ecb29315d8. 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/GBGQH1920285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2f7bc5c30f8af8f420cf93749a7b33f4b20f0390c23145bb8532b8097dba4c. 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/GBGQH1920287.
You are My Lucky Star (From Singing in the Rain)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0dda305014030124ef62b130bcb26c572187baa14c8c1e6ab42298be520cc1. 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/GBGQH1920291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0fba77856006f6a558b89e9a644483b569854014d7291cdcfc339bdd140cce. 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/QMBZ91351977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4467b80848db6f74b1a66b97921abbe5c2ea12134a6b57f2fc6b51c75d55ec. 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/QMBZ91351979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295787fe9aa9beb427b4bc96d791ea4d5a40e6863fad7b6e2172591afab18b58. 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/QMBZ91351981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b5851e883bfd9628c74f9d800eaefd3dc10380de9a17261987a228e6970f8f. 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/QMBZ91351984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adc88d3faa84be0ff61679df2117e69273c8a013e951c146c5c165b38e82ce5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBVVQ1025840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa1c842e4bb9310c758fc5214b741bc74717019175d5a44ab82a368a33a4858. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBVVQ1025841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d8ac72395212c22923a58d58648c6fe1c82c362f2934116d47e3303fca1115. 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/GBVVQ1025842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f526666f395b0be829c58eecd9d834b817a339f45b0b743bc77d094063cf06c. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/GBVVQ1025843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e36d9330f94d80fe502439667fe40d14902a7b1c354873add984556166c830. 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/GBVVQ1025845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4da3771c0dad81d68a6370ac54bdbdf26db3d1e2753f9336dd52f558bb4c36. 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/GBNAR2300267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf657697635c361505ff17d893c2ff7f1b5ce1759b20207341251b67d396a3a65. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBVVQ1025863.
Nothing But... Organic House Essentials, Vol. 19