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 0xfa3a977e307fe1db88ff6b56e569dd6978c654ce571abc3dd05c5ffa6681ed6a. 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/bd4b8bc2-e52c-4eec-a36b-0efe9e4a0534.json and https://artists.proofprofile.net/proofs/artist/bd4b8bc2-e52c-4eec-a36b-0efe9e4a0534.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Daniel - Eine musikalische Weihnachtsgeschichte (Deutsche Version)
Daniel - Eine musikalische Weihnachtsgeschichte
Händ und Füess: Einfache Bewegungs- und Spiellieder
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 0x2bbde1bb510667f91794d19c6d5a07e84838e64b2f3c35174f18e02460fbf5a9. 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/CH7811712395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9744c5a7fe4a5af7af9fad38db239c7774545bd98a038a9534ea313d74ffa6. 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/CH7811712399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834e62d080de81fb7bfa2661e3aba874fe397004b49510c720bc37427427d609. 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/CH7811712406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f187e70a0517d2f55710209835c9c3d79daaa7f90ed77384144ea49863ff54. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH7811712322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d132f3fdd02d28afc3f6fbac3ceabd66973305ec2cc25402c995892710890b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CH7811712323.
Näbelhäx und Wienachtsstern (Herbst- und Winterlieder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cec7568b9bf775b636826be82344822e67489aebcb85557e3914c9b8745a646. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CH7811712271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde304451d137a4a6cabe9a2feddbf4e145235fbf4d5455b75b8086414b5144a8. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:46:38Z), 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/CH7811712275.
Dumpa-Du (28 hochdeutsche Lieder für vier- bis achtjährige Kinder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d268f17462b1d82add96a2afbb8aaf13caf05f80a9d3e1e76e439c9d9d92c1. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/CH7811712302.
Der Froschkönig (Sing along für die Aufführung)
Es klopft bei Wanja in der Nacht (Kindermusical)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bc9759c50c2799259591c8a740ec4240ad785499fea9e5a47d623c10d14ccc. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/CHD492100198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a38655671960e1d61f6fb90206090d2f3aa026cd0a5f0a69585412d9a3af34. 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/CHD492100199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4210c61ea23e7823c120370d15af972c3627572c1be6b3013822094006570e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:54:23Z), 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/CHD492100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9950c73b8ce67cdb396fc242d712a52cf8a8fd7c7ad9396a1cb633aa35132c7f. 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/CHD492100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3a2901463b6d67e4362868eb75c2e187b80c0a004c60376b5e7db2277c32ee. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/CHD492100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb3cfa45d0f08732c2b5990d4736de574d28258c851e274af525e8e1ddd118d. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/CHD492100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa717d594c6048353c46d1e398a8166d5e0438e45aa7324cd576296e1772687. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CHD492100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d77e489be1bfd73df24335b8c11bbcef1adf3460920f5c90b12955ec162e03. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:32:53Z), 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/CHD492100205.
Im Bim Bam Bummelzug (Lieder als Anregungen zu allerlei Spielen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd018b8efd62c71733e5b6e6ef903313192a018cd9590a8c6d1e6b53f8d3993. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/CHD492300690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad5b3ab7134944f01fad46bb2eb37f2289b61a8177d67ff82a90e6fca333524. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/CHD492200395.
Quadliwatsch (Die besten Kinderlieder von Gerda Bächli auf deutsch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf173aa6349f3d3e77f1aa29e340ba9b070e9915efb9f90704e5c65212a6efe39. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:51:09Z), 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/CHD492401340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7f5f056492f3f2701f8f0a00658a5fc4ba3febe17a03c091b2ae2751c30952. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:13:56Z), 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/CHD492301097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7071989a67502c7137ea8ea2fd490f581b5b4cd1cc2633d1383cc7e8615c9c86. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/CH7812409204.