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 0x5a3ed085150b218c1c03ed915724d929b6dde9a0c287fc5b7fb2e3364ec9bf52. 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/c3dbf69c-793d-41c6-bbc6-6c96f9e1f428.json and https://artists.proofprofile.net/proofs/artist/c3dbf69c-793d-41c6-bbc6-6c96f9e1f428.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 0x8aaf1aac18cbca2f431daef47e0b95d0538b811798b99aa4359ce29884b2f826. 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/CAM460434751.
Theme from the Magnificent Seven - Single
I Wanna Be Your Drill Instructor - Single
You Can Leave Your Hat On (De "Nueve Semanas y Media")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc362057314623b26818547242ba9812c2349148e069faf18c956dfcb877944. 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/CAM460404214.
Hey, Pippi Langstrumpf (From "Pippi Langstrumpf")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20fdd3cc179fd9eb7b3f72b2d8abd972ddf91a0513d510cbcb29510ce04d06d. 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/CAM460435963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ce83915fd840dc31252ce04b0c2e39af0e04dfe33af966b4a4063d780eb74f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES5531225816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2310ce9b1b1590551a181e883e8b5760220ab51fd9425d2fdf199b0b9c7d27. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ES5531225841.
The Unknown Stuntman (From "The Fall Guy ")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73d077ae82349febb811105ba80db6280a96c29c47f92582c88c4252cd923f9. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/ES5531221842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1fb46437f7308b4939032c4bb86808dcc3070017bafdf100fbf0537954bf5b. 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/ES5531005317.
La Muerte Tenía un Precio (De "La Muerte Tenía un Precio")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf576910febd1b7f0372112da2a6f2e807488ab3c7bd1bcca75cc1461e7653825. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ES5831304082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbb125c0a691121c6134c973676304d9d23dbc8b72e9be216c96c9eeeae533b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ES5831304096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9c051a99a99e2fd97f9658975236ca4086bd25e5e67f2ff35cbfd22dd9e3d9. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ES5831304128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ebdc477ba5320019bbe4461aa14ed7974de8a9d99ef0e6db85918580dd62dc. 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/ES5831304127.
Neverending Story (From "Neverending Story")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043e2ed5c2859a1e5c94c6e9a4349b157aa0eaff992b0b9e33a65dd9a3cd15fd. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ES5531224922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efe24d36ae685bc3366d9a29db31007a0bd16d1f6f69c03b0fd9d0b0ab2e06f. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/ES5831304117.
Sixty Seconds To What (De "Sixty Seconds To What")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7dfca85a48693db585700b17cef2789a86c0f9dad8e50b893c04c124bba728. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM6N21539983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1dee11f64e541e20aeeb2f5d6f7a11b045e495f8f7f3fac89080157169c79e3. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/PL39J2200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06bd9914c8cb5447337c2de18c991a094e48461292d3fc58e16fa5ba1aca149. 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/ES5531434812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e54f688369cb44b70924f7d7fe84e500dff6197af8b511449d7f2003b0bb93b. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/ES5531434802.
An Irish Party in Third Class (From "Titanic")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255e3cc8581d6dabd3e1e35c5ecb16a9a4348a1b0035e92abafd9b46ea5166a9. 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/ES5531434803.
Alexander's Ragtime Band (From "Titanic")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340f5af397a588f17ed28c77f931b4c3a509857c9e5167f6bd775dd2d2a0e5a9. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES5531434804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7e17073c2364d33444f1254df6e51c6d81e97464c57b483b974d6c0d297a0e. 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/ES5531434805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3ceefbea8744f65b6a1b8135f33a6b5c5ebf0e930cc4e76e1f59859072e60f. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/ES5531434806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871f441ddcfc00cfb8bf6468969ad93400f7927c316906da6e9f902bcd7108c4. 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/ES5531434808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2cb81e8c640d8ef51ca355c8cdcd0c900c5e5c5bd084deb1975d71a2086c1c. 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/ES5531434807.
Come Josephine, In My Fying Machine (From "Titanic")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a547f4c017480f5d183d5f5af63cbd12f74c7937f90e694e79b49248d47cfab. 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/ES5531434809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e45419b7a8578255be324377dcfb393bc947fd571464f583ce7233346f99cb8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES5531434810.
Nearer My God to Thee (Reprise) [From "Titanic"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad41fa6162eedb6b3b26131cb73e08cbc510da0c2a711b69d027d89cd8a8aa64. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ES5531434813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93361713c9b160f8e46c0225c1ef1cef81c6f26e021476340a5798cf074dc716. 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/ES5531434811.
Epilogue: The Deep & Timeless Sea (From "Titanic")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d605dd6bac75cd97a62fc32fc27afd602735e0fb738ff35092ade9a34ba41b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES5531434814.