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 0xe3d08d583d71b1c1fea02a80191ff8fb84e8dd55e5747ea7afd15bb0ca6d11d7. 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/cf87afd6-e45e-41e8-9841-077327f184ff.json and https://artists.proofprofile.net/proofs/artist/cf87afd6-e45e-41e8-9841-077327f184ff.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 0xc06d3f80a2421ab29339d8fea8f27c2df443e85194f0d615e2fdc0d2b4f5ac7f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6F2415648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e7ec317dc3ca86a102be761038f473350c8297e8681051befc279e62bf20a6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZK6F2415650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe70ba2b32e092bf2ed5e81b2d932ac7ba739a1d232b6027e81ae0c97570104f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:30:05Z), 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/QZK6F2415651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe018b6911b444afda59ab40993da9afe1d270cdc4ff29ba663ddeb01026e64ac. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:05:24Z), 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/QZK6F2415657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee2950f65775b38c62af428aa78d0c16e49d9ce81d6aeb01985693ccfd52e5e. 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/QZK6G2478561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6faf8dbbdb2136569b7fee8b8e6d923f69cfbc8679d50c15d431a90ce895e4f2. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZK6G2478562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d827952190de2e452cdb4093bda9539c386e7df5ca5e1b7e44d5b75ebd2fd9a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:04Z), 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/QZK6G2478563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8641d8a4f4123f22e00fca686ba65aa610f9878d56a383d4e292b6f2bc77c76. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZK6G2478564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86199a57ca38054b3caf51abf104910e94f6f311b8297e1b80f3edd6055a8a8c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6G2478567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff528b503e547307b6742123c9c7c6f6e2bae37d96b9f840a097b7ac90cae33. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZK6G2478568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961d741c38e4c127506119266304326c275b27f0febb863515ca150cffe4930c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6G2478570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5b7e1baf90e1ce2b4ec4881bcf2ebd6695851e090410eb5478c4619d340277. 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/QZK6G2478571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857e223ebc546f3c838ce222857f4f9e4713168ee6321cc48f486e426e93971f. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:40:35Z), 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/QZK6F2413040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bbc79766391824f97527a7ecb9cd6189b5591e1f354953c27283b38d1bcedd. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZK6F2418497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3382c6a07eaf653539d01fe840cbe10cf79aaecd76a28cdadc22d80c90f1b90a. 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/QZK6F2418500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9afdc9df99b8c304a9f0b20a15c8db0721f078b563c32013e47343693e8ff64. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:24:35Z), 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/QZK6F2418502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7a55577453c5159711598eba59ba6741dd514add1a407b96cbcc4bc9bd32c4. 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/QZK6F2418503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013086529ce4847b8332a28e61fff3a1031505e775ad236e5bc265841becdf94. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:09:02Z), 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/QZK6F2418504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6fc4b637b4b5b37c58e7cae88228dcb6b6e93c874e5e4a78c66d208a30ed98. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6F2418505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e0835091222fd64ffdd23bd5a229e74c88e014de4b09c487a4c02ab2c61c4a. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:46:01Z), 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/QZK6G2440479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda27f4a5fbe2e07538ff3b1120749a1fa5582943db94d0861a3124a4a7e348c. 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/QZK6G2440480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a7d016f34f4f799a3a5a9224d0cf5d7c65d9b45c499a4e9087ef632438b8b7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZK6G2440482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281098039469e350b3e01794721644ace18be5bdfc86f4682807782f91c40198. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:31Z), 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/QZK6G2440484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abf0fd5ae0e6603e8df418576c1461c84ff63625349f91258326ea9565e8cac. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:37:33Z), 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/QZK6G2440486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ca0cb09ccb7ecf42e40b17c7ef1c92599288cd52d59a6783f3958a247e351f. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZK6F2455389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0d826f800bb565f10e287cb57eac0c2bf086a69c2644a46d76fa5e7a584d01. 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/QZK6F2455390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808a9ec84b53118924fd42f8b9d52758ca3601bbf53e6871ec5798662c450c3d. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:49:56Z), 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/QZK6F2455394.
Nwa Gwayimani na Xindheku (murhi wa makondlo) No.4