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 0x37edd4765984c4d8238268e392d2504328ad80df7dd46482cf395bf30ae70f19. 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/014952b3-f6c2-4f34-b468-9b28034dfd66.json and https://artists.proofprofile.net/proofs/artist/014952b3-f6c2-4f34-b468-9b28034dfd66.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1b977ac9cb6e30bdd7cca1f82e9afa46ba21677456b9a96aaacd9c003e889c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CH0800358501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d02d4963c8e956671f575172e292488f19e492e4801f5cc38b2f6ebba2219e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/CH0800358502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7300d6b9460af0c30d823965179ce7eddf3834179a29928b615aea876f37b635. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/CH0800358504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e26cdf7db9126b1a3603c7de4d93867962327b1b1716f323d2b51122eb357e4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CH0800358506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600326e4d82f630a720b2ca1a3b15ee41ebce08ee7686da94cfe3f9d156a2aac. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CH0800358509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9725b82a72e1ef890278950a648444b1b18535fea598a28e3d5f568e914bd7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CH0800358510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf8589664a627f5af612f6a740d66c590c3f5c36c6ecf42c3d7dcc88f66d8c2. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/CH0800358512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb801e945dc27d82f32b77e05fa11ab6938432e7ad00da158db4da28b650370aa. 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/CH0800358514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c46f7c68d54b5747c66fbad32c6db7c17f630a7ca994c9cf295893f129e29dd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CH0800358519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f18b718c0eb5ba3ef6a8fb56d70f0970a0bb817d531b782d255f76cfcbbeac. 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/CH0800358520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cb81ddf21afaf6082000f2bb3dfe681b417e4fb14a12aad10ba678e87947b7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CH0800358521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62da7191aa36b09bd2f8371c856bc264a46b2b3140bf4236601c7b1dd0f71bce. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH2120008001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b94c2a016ce470b6728723ae493c510fa54870ae96e8b980bcac608871710c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH2120008002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba57b585c06dd2abe030298bc315b048a307ef7f0f897b2d8751b3f25616a2a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:20:55Z), 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/CH2120008004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23328e19a9d2432f9fe8ea85acb6b9d15b9d5026685e4dc404f2e01fb143b63. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CH2120008005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf13b7955eb8b56c5f0eefaf21acc5b00c61d8a877384dcfbaffca60c50a86b1. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/CH2120008007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033122957566ef9fabb865a00a5d61abadb53224775a9d6a3dd822fc1d862fca. 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/CH2120008008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d01c93241f8cfb29091b10a3cead647265e5617b649114f88e86734e561ffd. 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/CH2120008009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0d1ea1a298e6804f0d050e28e4cf70f7a3a89dea03843c90a09cccbfe7abd4. 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/CH2120008010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1223bf840f4dbb06c1f0f587e7ce084b444aec6fc56d97c0f65f72ac71b854. 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/CH2120008011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a459a4989bd2c65d63a5913fb207013d907dbbe6e792d5eee2ae1188c6c38d. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/CH2120008012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e462a3bd085f899445259749c7285c37fa15fe17c116eaf08cca401587e2217. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/CH2120008013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651e2196ba124069ff97cc2fc7f24045b4c0d08ceaf4562e125251cb7f5c42bc. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/CH2120008014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54901a98495770a4d281912c2d37314e316e19ad91285a39b39b7d8488da6214. 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/CH2120008015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e000cc8e30fd01ce4fd6729c7ba9d07af298926196ee4a136e5c5c0fe222b1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH2120008016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680416b4361cd1274d2e4e383365cadd6e7b422ac4a6ecea8745a92e5c08b004. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/CH2120008017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0be52939565de5b07033906cf781fdf40d4564221cf887a2af84946e2faa2a. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/CH2120008018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f89181a144f18621a1acbeb5a58977acfd90cd8ff439db76c22e987cce6531. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/CH2120008019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3638da7ee7f3c49292e0d5962a50550fe2cc7095fbd32280b4534dba4c950628. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/CH2120008020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10d882f71394bd3994c65ee0fde60300c59e5b503a5b283c66ece8d00ec046d. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/CH2120008021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87914e112102444c84263a16826c4fc5e8f84136cce2556ad63e9a719da3d870. 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/CH2120011001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a6ebcdaf7cf6dc8eb502604ddddd7143600a2243e3f01e5cd68a082d5e3952. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CH2120110003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6004527b1b428a6194f74c5e31bd6d36971b51f10b685c266388d8557f8b4bf7. 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/CH2120408001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045d58f4ca77c35c8f461474cb7d74033d0e1c887f84a0513a14d7e7caf1cfb8. Chain 2 (Bitcoin): anchored in block 957827 (2026-07-13T08:59:54Z), 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/CH0800713901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed198434e8781cb31da5fad8e2ebc5982d4fd3a18be5078a7c17cc86bdcaecf9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH0800713903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9f40e305a3ea519435fb80ee4217878307e866b1cc7ab612b11e48b7df6f6e. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/CH0800816503.
Singt und verzellt Grimm-Märli, Teil 1: Ds Rotkäppli
Schacher: Die Rose von Jericho (Hochdeutsch)
Singt und verzellt Grimm-Märli, Teil 3: d'Bremer Stadtmusikante
Schellen-Ursli (Die Originalmusik zum Film und andere Schellen-Ursli Lieder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada69edd16f2112f6cc57603ea406074acf15efeea5c835b0ebc3ba2d63b68df. 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/CH2121508001.