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 0x68b82663663b5d59b1144d47c3570799529b0c7b625e651cd260c086a315cbdd. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79b98436-c5b6-4176-9e48-552dd999ee8e.json and https://artists.proofprofile.net/proofs/artist/79b98436-c5b6-4176-9e48-552dd999ee8e.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 0xab269645651771c0257917406453bc1ff03f288cadef8d50e02e7cb4bf0f1d75. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2425242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ced264a8703406f0e800ff7a8932f3550b8f7529d0f8cf941f1782553781fc6. 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/GBKQU2433021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bce081ba0dae8c61b23b13fbea76f300130760b84e4eefb98d602571396a9de. 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/GBKQU2409177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ad812c45221d6fb0d6c372f3b911dda57aef648d411a5fbd2b5d42fe01f760. 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/GBKQU2409178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb352fdcd9e856a385945b382a80d34865cc380da1f2397a5c6c84e6d169ccec. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2409179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c2e12ac1f226f4409a48a45710854bd37e814f002e73fca0b235ad162d6f17. 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/GBKQU2409181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e66f79abf1c7eeefc5e3ec705613087dcfe12dabc0745cf2b82990e3b749d3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBKQU2409180.
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 0x77613f082a8d3ef5ad19f4a49656ec4fcd19898ceaa4975bdd88e7b1acb3d337. 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/GBK6Y2205241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57901ba8b00933196da13b564b12a852c17fdb9e910f84ff0b1d62e3aa9cc1bb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBK6Y2205242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2ee3f6c87a24c6a345471ba083ad50f0604dbf0ad4eab1ed49f24a68a4923a. 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/GBK6Y2251101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b10dac92f499b3c80e311563b54c6fb31e0474e10611a8be3463ce5bf19f01. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBK6Y2251102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43412f6fc2cf353c4ea66baff4ec205bd2189be3a38e96c82522553d83a65c3a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBJX32221047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2327cdd75599a2c4e7c45f9d5ef20a866528f2c2a6a91461f82448e312975bec. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBJX32221048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1cf9c32503a78199443ae42787081de5dd37715c889ed3930ca47ce2a4723f. 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/QZMHP2359532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf774038c34a7cefc79383b69c052a9e32f699d2389e75c36b61fa307f312ac53. 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/QZS642361863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8d165e2b48dfacf9f47988599ae3fc8091d95d99473eef1db9dc519ca65922. 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/GBK6Y2259103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85dbf71c98ec10d0122ecc67467e89f298ddd3d341c94e0e04f10d916669fe60. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBK6Y2259101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922573e1180499345d4306b061f42e174297d1bef421a4845c625a986d14fd2b. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBK6Y2259102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19af6484cc49f2c23d1f5cad514f7387069b6e22e59c40f1860ae21fff52c061. 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/QMZQ41640001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeeaa0b640d253f99c8015e9f4361d5fce4ec82f0159845ed656c4fa77cfcaff. 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/GXBNP2507512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb70d0b32541f995a19da759a08aa98705a498f82d6657c92b67aebc13fd1565. 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/GXBNP2507513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f4c228193620c07c0913a257865a7f393f25135a7f7ba511887abe1b2108c6. 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/GXBNP2507514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bf7861711188a1e95d4c304cab15ca16453593982346cbbc486754872526ed. 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/GXBNP2504371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebe76376b128754f9b15d18746538fbc8424c71cc593fbec357b66764082085. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GXBNP2504372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d61a1664ef676239c933824e14490aa97189ed6cc201602643c23b28986cc8e. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/GXBNP2504374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3107a37fd0ca5a504f58930ec2c38ca92d9aabb00b0a56e54ecf8c78904155df. 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/GBKQU2521445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d7950e70d30c2e02a5cab054cbf16bd11d7c03395c64690c9b8a78dbe35323. 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/GBQ2F2400087.
When You're Not Looking - PBR Wonky Fossil Hunter Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276c7849ec5a0a594274d8f9997412785522445ccc0fd5271618f169d6b66396. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBQ2F2400088.
When You're Not Looking - Toby Simpson Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d96203adc6505f277900a48857843d7a172c34a0ce6894dfdda80594807579. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBQ2F2400089.