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 0x068b5acbe73cee3dfe6f0ef4164caf996288112794c7449e8a8597676c0ef923. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e47ce6e4-c6a7-48ec-ba0e-63f4a59df8c1.json and https://artists.proofprofile.net/proofs/artist/e47ce6e4-c6a7-48ec-ba0e-63f4a59df8c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Complete Recording of Boublil and Schönberg's "Miss Saigon"
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 0x6db797137cac3bb7c7d1d18fd0edbd12460c0604abf58ed40ad1c32939b49b66. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBKB9520101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea511aa41265cf740c5016ae43baaa6385187b103c292b3a9ed5d05f51a7371. 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/GBBKB9520102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7f732ce32fef8439456b25553c272077e3bf002223b836942718f5b46596ef. 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/GBBKB9520103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8a014786738f7d6d970378cdf0fefce673e8ecf16a72d60464bd01d201568b. 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/GBBKB9520104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793db5137a30119ef41c6e29cb2851b22b92a1ba7063efab15154692e15ebdc1. 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/GBBKB9520111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1895eac8c893601729a07d1a60c7436798a092d0d85e74c245d15ff34f805e. 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/GBBKB9520114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0f8a468fdc8d43358b424a0533c7845e956d9e37fe64aecf8ab464568df070. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBBKB9520116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6d9db80467f7eaa64520f31dad07bbd0c433f440dc7d4e089730a92f6e5e78. 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/GBBKB9520117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f844df231be7cd26daec269b67bcc33ba2a360b4889fd5a6ec3a8d82c4a205. 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/GBBKB9520120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a667efa308b82bd8c11269cb021a25a7343d21cae2714797cabac66f5386af. 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/GBBKB9520122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37985d0e4521d95b12e13a36e9ce6715b0a4f2a1922c5c378c47ba9dfaf574c1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBKB9520127.
Miss Saigon (Highlights from the Complete Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b468016c456f29fa5a16fcc1a8193e35100769b019597a87b6bfb0cb89344e. 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/GBBKB9526003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231aac33dfa0f42ddb92fd8e112598079a447de89307315e322e572d1b58e0ef. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:19:32Z), 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/GBBKB9520131.
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 0x0677431f4619a6f2b0ee0461fdced7e3fa7ff4b7f5f506832bcbc9e67ac88eb3. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBBKB9520124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd003e83b22c2cb45cfdd48c0c8c210c68c77678d733287e3484a3babacfcd2f5. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GBBKB9526010.