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 0x71ba5eaaa4462beade74308d07e9e170d5af4d29db291ee2622481eebfabb03e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4fef78c8-72c7-46b2-8f4b-3a3466135888.json and https://artists.proofprofile.net/proofs/artist/4fef78c8-72c7-46b2-8f4b-3a3466135888.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 0x457f8283fc337cbe71ec87b399d8d3d41a3520031bbd11044d3da13d72aafd12. 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/BEO891500651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46e73f63f480931e72f017d7161f82deab98b3cc7b89e85f09468ab1f282bd6. 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/BEO891500642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1330aeb16333523cd7984d1bb71b36cefb2b750711da0c68bb45338d1b5063. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BEO891500659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b986258427a79cad863b09a58c78a73d182e783b864f2abd844491a46d0679. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BEO891500634.
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 0x01abb81c74c1b8bdd18fdc1ed2096a3b2917cd43ac5954e0faa00b4afacb9c9a. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/BEO891500650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddc93f85330e8a5809fb86b6d5965e9b6fcbc3d4762f0206633227e27fc1ace. 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/BEO891500647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf1fd07735723fa6e46b6ec5986a249c1411be5eb87507c9477d2d8f21658b4. Chain 2 (Bitcoin): anchored in block 957822 (2026-07-13T08:02:12Z), 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/BEO891600683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c1c6c95087dbaa9790e617aae57b1cf7a43f1d637fbef4d6e404fde4b9d551. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/BEO891700673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60e94f1518141e28431f3a4728c02cc05761fafe29489891d1889922a417ae1. 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/BEO891700700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5396f72fab728e4fa93d7eff6cc98df7e538dfbacf6c830870c649ebe4726224. 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/BEO891700701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52467822074edb2fcf3fef7a5b98132fafc2afb7b73684d184cd7e95ec748224. 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/BEO891700707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071aa4105a4c0beef1210a9a81e63623c60fda9c754b263ec0acdade7a1d2d05. 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/BEO891700717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6540f42aff9241827304c8f583f8f45d8e69d8914d8c93f8d2dac12afa19e7. 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/BEO891700718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a208c1a8d3d2fb5cd3f7ebecb1905055c013ef48fe45136e6f3a60caa548107. 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/BEO891720720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f226c36cb270bf3a16a9bf6d3ee48382c2992add16743101b4722250219fce5. 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/BEO891700709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3b3ac7c001e27be7b7b8a48ba94247d18b7776adb2b76beb22980beb9bec50. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/BEO891710720.
It's a groovy world: III. Amazonian groove
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735727432f8ae627aced36b154e633c13d16f535ebec32579ab23c656e5de9e8. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BEO891730720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9134e20b80c7fdf4571a1ef912a2e6a90fa341005f2ce22a5075f5155d0f46. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BEO891800759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab04035d91f7653de9c9a78e51dbe8e3f0a679fca4a4056ea9d12851f2016cd5. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/BEO891800731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6174959c9e11a8f881c4cc1700ae66c4ee90bd72be442bc7ad6360ee309c6494. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/BE0891930790.