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 0xcc004901186051dca72b1a1cef6cae660b8023e38948dfce4975bcda86ca5f51. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3dc78f7-2d6b-46a0-a514-70be6baee0c6.json and https://artists.proofprofile.net/proofs/artist/f3dc78f7-2d6b-46a0-a514-70be6baee0c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Orthodox Chants - Yoan Kukuzel - angeloglassniyat (John Kukuzelis)
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 0xc247564ba43dfc4c712c955147d6361b9b8c60e7adee086e12dd113606aecb22. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/BGA260701701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0cfa99e33069674e5e4a91125e1db0e085885c3c01b3fd656eb30e70d6df64. 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/BGA260701702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7184bb9a45f35911029d1b34c3a8a3f506eaa54d28240a392aad6e9a9af6732. 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/BGA260701703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d8c6ae263192d9534a8814f27ee6a53de11b83dd9f01e4b0cd196813367e54. 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/BGA260701704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbde7238985c78318bf5ec8a1f27dc76b7a282e556f2686963fb10d9450cb65. 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/BGA260701705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42dd38670bdd4a00cca0f7305e10d74825ae3138f61b723e7a379a741f7eb6d. 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/BGA260701706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33f9ef7c1184b104dcb68cbae2c7267483e4c6df0eee5328bf8f850a3c474dd. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/BGA260701707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cb45d7ff42d8b72abb335aa86711dd4551948f989b4cd8e72525b30bde36bb. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BGA260701708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d6e8efb1a65dbeeaf43c115e10a7fd32cd0f6a4601da0c46167f0fa398ac6b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:26:47Z), 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/BGA260701709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83be908de0f5368d8544500330717f04b8c4745175b6a15b2bb1db1ce28c3044. 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/BGA260701711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377e25cb298e07b82b897196c76f97fc7ef0bfc541d794055251b63a94497cf7. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/BGA260701712.
Eulogy to the Slavic-Bulgarian enlighteners, the Saints Cyril and Methodius
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60e97c810e825b2b9a103b75a9c2946baf59c97fab1660edd9d98d3ced442c6. 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/BGA260701713.