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 0x41d31c5ba069d8744cda4b2ef8386089e7f87673171783c7e54241bc646306dc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/559d8e7b-d200-4d0d-bf09-57ee610b154c.json and https://artists.proofprofile.net/proofs/artist/559d8e7b-d200-4d0d-bf09-57ee610b154c.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 0x7ec467a07ddcf3ec3aea18b9e81292eee59ed6f283ea5fcd4c52f510e076602f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:30:30Z), 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/USCGJ1943438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb235355215af2fbd024304edbd3696478ab002bf48b25f04c68a143f6c5f3a. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:03:33Z), 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/USHM21987423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41d3f8b9c0b3ec576498d64e44c5152b3b2557008baf9889141f9bc1ee5b5b0. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/TCAEZ2097555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf63a58c1629d803209b9011e6446c74a1c0acd5ab62cc29a46d48c88a37989b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USUYG1330542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a734b727824d105e68756aed35dc0df8d6cc5320651e2345bbf4b219bfd1b1d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:26:45Z), 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/USUYG1382768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e232276c39b79a97d1d114a35abcf03124ec25ba48cb59c171a8e7b41bb6f4a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZTRX2241782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0649ebad28f81236fda1ea4973e660762fd93e0d42177679f2182b39feccbb61. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTRX2241786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c121d4ea9985b1486ba66c5ec65a8e68a977e1e7a8f3bbdb846ff25d8f0965. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZTRX2241788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab60ae4821000d87780eedc665a2203efae21ccf9b5196a1e1135c6f32b75776. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZTRX2241792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27611253577a57098acd4f50b1cb1a9f4df75996fe131049138c18ac9dd10136. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZTRX2241794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a6884a0cbebdbf12090a8ddd5cca7a3aecf8485c273d02229acd6daecabcee. 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/QZTRX2241830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109637f7fc19ed294183a8ed5f22057e7276d228f76429ccc071174d9a3e47f1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTRX2241854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeda7fa6614922a20205147795cf4c945ce6f1a7807e57045c550fffdcc5b522. 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/QZTRX2241856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e9a97e4bc21596e7bbdcd78a25575bc1c90680df9ed1d41ed793f31233965f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTRX2241870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b9b3039b7dbbf5876a60e06d488e74f9af761922844eb18d1adba656530204. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZTRX2240321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1952eb6d158e2cd6f1b147fde9bc3ddd8d8159258885778c4a1545cd66af9d7. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZ5FN2363625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad8bfc567d1d84ea7d9a45a4ef606feec6d8bc5d90fecb440fd1b7351ff2892. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/GBRKQ2373872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9987147d8311ecad2af5cfd467ad5cfa6706e8aa52d7c3e11190b1b5b8a6f775. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZWDD2370387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864c7c795bb0b51fb220261867ce9f4f385355840b53bd7cbd15e1f647277f32. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ8B2347211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76bf890ba65c06d40f46993c46dca5b60234a4e338d9104039c13e171ecc529. 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/QZZEB2372682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7d8bf01c3a55b48674c2540a547b8e3765c88f8b98720aac233e7c67dc2272. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZ5FN2429457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80de7c839351a00a4d7772e834ff551cf3ba6bd41adf527cd5f2a552776cabb0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBRKQ2426589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddf96c29040d92101ff08819d9e126db3ad6de6cb74fbd07e4338541638ab91. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/DGA0P2318749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605514458858ce735231f12541b4a440b52959587195ca8a7af693197d9599bf. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:32:06Z), 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/GBWUL2409506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad8bfc567d1d84ea7d9a45a4ef606feec6d8bc5d90fecb440fd1b7351ff2892. 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/GBRKQ2373872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde727ce688410de8ce031c05a80c52063d72a74da02b24c418cbd13795e66e33. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZTRX2392931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c4c194c2cac4b7a99b00bc6b3d4cb374d2f8eeca0c5ae9bb17b1f05c624cc1. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBWUL2410534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d9f7f4462546621994e23f542233e218d9a35c60e3228929e12e5895869897. 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/PTIBM2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd56cf4f3e638812a5d5a5d52cdd81a0ff82deee7910a4720ab0b1736897f8e8. 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/PTIBM2400007.