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 0x07645d817e66f47503e442fd11a61312cb4bfb7066594696224bbb85be59e42b. 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/131288fc-f5d5-4f55-a2a7-7bd4dfc4159d.json and https://artists.proofprofile.net/proofs/artist/131288fc-f5d5-4f55-a2a7-7bd4dfc4159d.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 0x548b173b3a294ff4b41df32e538f220e79ec321c7964e5699b710f8be067514a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZFZ52180423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9b7ed75881a0e566d25006f488a846ff1306a8a6bde7c87d902a2a63a8fac4. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZHN52147653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac6cbd59555fdaa00da4e98e2789a2f2a4bf120b88399ba79c3fb53814bb3af. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:45Z), 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/QZHN92169972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee8945b6514ea8e05d156e783a1e5435f6b5f5b56fdbc143ad105b9bdd5027e. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZK6M2114994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bacb7119362b6017bdbbde29124889772fec9e92ecbd032231578fc746f90d6. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:59:03Z), 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/QZK6K2148709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d315e8d14e8d5946dd41deb23f23a3de146797b115597490a2b43b48f1ce50. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZFYY2214815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30391cb0f84af24826a4bca7a33abd3b82b6633a48d44867a12e2f7b0d73aa24. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFZ32204143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2b7d414ada82ed23d78abb01b4165010c8cf2f0dc2ad0b6875919566cad8c9. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QZK6Q2249498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ffec1994def31c721ebf17e836dd63c9edcd57b6d44d6f967090738bd7b3e6. 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/QZK6Q2275848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbf4c10b4c22aaa0f462a161c798eb526a80ae230b75f8363f2e376bd0316f9. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZMEP2296282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292101c560c87fb2e57a0fc694c4ae3a280686d11298a8e3bd9ff8513ecd0fe8. 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/QZDA62318568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a1ce48c08d01ac88c253772a61205f9876ab7eb502426d3bfe810f6fc369c3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZDA62318569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52a65f5c1118c4ddcc78e84cce777e2c38a4e15642404de8f27a2484c20cf1d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZDA62318570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71b8971b405a9620d3c1c5c6c46ba0b268dbb5eb1763e029f80f76bd1052564. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IL6652305703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd196b2fba6a31c90b92fd672bb482005bac012110cbd1b8aa1c9d8fd9f67a1e8. 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/QZTAZ2339909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a94669db2daf71c5af706b9bbdb4c3c4e7858d275ddbfe9c8a79c2669ef2b5f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTAZ2339910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddb04e11194577d511d67e8d4a22dea8b45de5916ebf93a5912102058e64111. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZDA62428445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50888d1407d88108516479fae85937807d22619fd949fa6cd6127f487495b19a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:11:06Z), 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/QZES82473605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed6aceba0841a7bf8a10d43180cba0f86f712fad227e1eb4557438d1f633e51. 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/QZNWV2419707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72128001efadfca2606491f8033410b9c7c8f5efc399e77fbd92665193dde4b. 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/IL6652410275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49add40722dd49114763776db150123d1629bdf4d9861f850cd1df2cd20bf121. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZZ7K2497105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb540aa71292e27c30ed2d73bb2200176b05077f71e1c0030003c3c6f2793e453. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZES52596820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e84361f8f00b29bde58df0a3fbbb3e30b377ecb9b33c4d8b7de0c5d0b93580. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:03:34Z), 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/QZNWS2542199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80d4b791b118c1a490cfd04050b2ce63dfa1e5bb39d9ff6eb81f082c9bdac9f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7Q2539106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46466e13a69d86d9f34492dac02a7dea92fd78ac67c66f26340dac1b3857dea. 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/IL6462400270.