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 0xa4c0b70b724d54b9f55be52082e56715ce0fa5d1c52930d2ed3f8f8becc976e5. 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/848eb898-9a5a-483c-916d-ddd67ba75496.json and https://artists.proofprofile.net/proofs/artist/848eb898-9a5a-483c-916d-ddd67ba75496.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 0x5273c23c9416b8cd5eb5f22c05284554347b4bda87973e5b5cb2a4b9ee38b05a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDQH2373589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7c819e2b9fc721bef50532b1f8b3fd9fd533b8b3e14fc05085836bc3ec535d. 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/QZDQH2373590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd5e6930be8d8b5093fbb996a949c53e7e38fa6a8a97663b0cc12da0c2af3fb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDQH2373591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46120fea2b85316e359200a8bfe8e93d3f2fcb547f419fbaca1ef46eed8215b6. 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/QZDQH2373592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8257889a7518b6bcb1b495e697238668bf751c4bdca9f0ebe157241a149c9f. 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/QZDQH2373593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7236ee4f35855d6b93bfecb6721e5c265d55e270aa8f466ba378045601dac7f3. 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/QZDQH2373594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018f4c73a7af58f2f7ef90d7c5520efa693f0aeaf346249f1dfb7d8ae184a58a. 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/QZDQH2373595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92eed12e770448d1094dd9f4f387f9898d92dbe56d070ab76986d7738386a1b1. 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/QZDQH2373596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b2ef33203f6174f50a81810c6925a0948141bfeb5be20be9162e7411e4a45d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDQH2373597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fce340ddb67d2727cd6468c782b9e3e630b908cb0f7e86c221685f680c8c90. 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/QZDQH2387621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324fe153331fa2f48fc3e6422590a015757972e80507bcdc149e96f7b48dd281. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDQH2377341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ff7652e5fbe7a9b5c51ee2f7b0ca39ca351a17c6ac7c5b5fc24faa3ea3cbec. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDQH2372821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68910e4fc779a2e8ac8f2e3348c2ae08a7b729b250e09f9f2f12f1b5306026c4. 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/QZDQH2390379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6c0514cfe6415cd24adf39138b9c0eceed6b0d09077b19e7798435cb063267. 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/QZDQH2415226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf212a306b8b25f2ef61063e735fd55ac3a387693432d6b9b48c943101f849c3. 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/SE6HN2475800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f352ee829e777fa3a31c8ada3f7d222f4314dd5107f65381ae09617532dc8a. 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/QZDQH2399769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74343ca2856665ea726acf07df6306cdacf0b487e4538dfe7ad33b316f2479e8. 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/QZDQH2397552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b50730ab363597b525ecabef79ca4cdabbeeaeb8fbb6cf4919642a3960cdad. 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/QZDQH2395143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10d5a36276c18878b195608acf0931c5ab812317122af6caf1f923ca4f2e8a2. 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/GXBAV2345550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9429e7c23d61d87a1811a4919213c663a6897ccd9b47c93d75c6a623a9dd15f. 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/QZDQH2388661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5333db5b180e6e696a6c772b3f96a63b570ccd990f53812c2349241fce40930. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDQH2377728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41a030c083dc21db578de1d6f2d011de2dc6ee178675d3f5c656315c03d6523. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDQH2369615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c53876f8a7abdffcc2d994646270695a03774965279a85385c8f68ffd18e59. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDQH2357198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf3eef9ea9091ef3fbcea2ecfd39d4685450c8dea0feb42f61ed046a4deb445. 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/QZDQH2359881.