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 0x0b710db548d8f4ce150e2d4ae924c5a94a00b661f4edd7d2a9e01dbce7473f2a. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ac9e761-a03f-46ce-a333-a6b8233e257c.json and https://artists.proofprofile.net/proofs/artist/8ac9e761-a03f-46ce-a333-a6b8233e257c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ihri schönschte Liedli + Tänzli (Mythen-Lied-Edition)
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 0x8201074d074cf5ca3bf7b778671d334d6097d9334a9e26a61c5f5b4c77fcb9ea. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/CH7812041975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ded9a8f07b62bd5da4eba425d2a041d612f75eeb792ca51bba4bbc2aeefa937. 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/CH0201010053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe3571ccf363a2106a1dd16f62a01b4b9d2d46e38f13fbd1bdddeac2caea067. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CH0201210134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e6ee3a1dec2a232e8060e0179735324c6b233d079e80312576fab17bf972d2. 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/CH0201010055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6299f0d971ca6f9ee90680ef627697e859729f382a7a1a6a2bd258bfe803633. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0201010051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d537101840c458c1619e56ce33e66c161772ce86d9f51266aacbf7b6cdfdfc. 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/CH0201812731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf5561e4752c9ac1d94ad502e16b621ec87d4f5fef8e00bd140b23dea06fbb5. 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/CH0201210496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b7b45cf5371ce3d3789d8ef700ffb1ada7ec7594585a59293d184668312430. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CH0201210490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe3571ccf363a2106a1dd16f62a01b4b9d2d46e38f13fbd1bdddeac2caea067. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CH0201210134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8201074d074cf5ca3bf7b778671d334d6097d9334a9e26a61c5f5b4c77fcb9ea. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CH7812041975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027495642168c9f852b927b47afeca75d27a0c946141d01a76dc9e725402380f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/CH0201010048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef92e92ac6f69ec6e42b8840dadcfca533c5f3d539d30a5d61abd560a47c431. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/CH0201010049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cfd318f73d93026a4e113e47eef97775d9dffaf3ab1c78a019f9c8ce092638. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/CH0201010050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6299f0d971ca6f9ee90680ef627697e859729f382a7a1a6a2bd258bfe803633. 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/CH0201010051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ded9a8f07b62bd5da4eba425d2a041d612f75eeb792ca51bba4bbc2aeefa937. 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/CH0201010053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ad32f2f5e51085f46df4823243b15e69cb7a8b3c627d8b2919c6117e5f374c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CH0201010054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e6ee3a1dec2a232e8060e0179735324c6b233d079e80312576fab17bf972d2. 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/CH0201010055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95412c509436dc3dfd9a86666fd88e3d19c5bbeb7422c8b79cdd8569ff1700ef. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CH0201010057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289ec6159a51ca1b59562b71b60de5ba5b387c54520501438ec4a492c4270ac9. 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/CH0201010059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc308bedadb42a31601345a98f35113ff8623cb0667ef990932355e8146e68f. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/CH0201010060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2fa180fbeb95bba8fb770dbde1e6c6b093e5007ff50bd3e10bad2749be2eac. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CH0201712474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae15673398c2fb1e29773ed7b0c44bb1d2182d3473a715e2442b359d924a03d. 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/CH0201812725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a72c7c5bea39658b27435dc59c6f2460f8a2e49c7eafc89fdc4504e5c66cdb. 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/CH0201411168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5876eca5a0353d7567add8418046213c84057402821f826c43494c745e0831d5. 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/CHA171900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b841b7a3d9f493837976b70d18d5f24c4014f1beda3db1b64c5e179d21e059f. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/CH0201812564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf5561e4752c9ac1d94ad502e16b621ec87d4f5fef8e00bd140b23dea06fbb5. 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/CH0201210496.
Fredy Hess mit de 10 grosse Schwyzerörgeler
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca887521576c63ccfdfa6ee6318d20f2831aacfc53b8261be0a48178b0ce115. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CH0201512090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf809fdc96c31b3a2658d065c0b3b1f7671315167d7c465184bc299d659977bc4. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/CH0201712488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98c6b83967126fda9a0c61155567306ea0abe1937de4db4f8f00b7addf9d9ab. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/CH0201812787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989d5d174cb7da8e38f810ada4f92683d93db99bbfac8e236bcb030adf26e922. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CH0201912894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef8affa62682cc3ecd1f428f19bbf956cef8f4e86384fa4b06d295c2a5587ee. 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/CH0201512068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83dde10c30a49ff2cf31ba1127509e0497e8c901d53943c9baa6aeb2f2b5a80. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/CH0202013013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bce9686a4a5abe5f055194284161dbca14aae2018b6268cb8fb6c3c9962b45. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CHA171800165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bc46d038f8c0280437ba6072e37c1535001b3498c5caa7118c2a9ed3a8fad2. 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/CH0201110376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d57af709d00bbd33441903c06eb7e9660b375382c3a08ced98ba1d851c5e80. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/CH0202013014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b1abf4c80dc269cdc54520d91fcd64746867c918e9ab77fa472c52cc95467f. 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/CH0208500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc870c31a2d5ac3dc62e56df08c084f7a6eb68e3e00f6c5d8376efacfb8d2efef. 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/CH0201712452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a7105934da7c5938c29c07c6e29e65406d62e06d7ce85238dcc2776f983e76. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CH0201712748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50f1650a01efa3fdb98de4a89dde0eda934b973dded2e268c450449a3367f19. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/CH2011059677.