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 0x980a8c585e8a1b781f7776dac52379345faf770966a5931bc5897c562aba6199. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26a276b8-f9dd-4b24-b9c0-c3e273d87f5d.json and https://artists.proofprofile.net/proofs/artist/26a276b8-f9dd-4b24-b9c0-c3e273d87f5d.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 0x12a1921cee5d3ba3c928a56cf3a0ed43e2287ce8e3479896665337e54ec722c5. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QMFME1982863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5a076eac52cb2608e9506a61b68180e4257ad4e245121bb29d40250ef53dd8. 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/QMFME1982864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe926c6eb4cd994779617e569b4a4288b8610a320867db837a21c37cf151b4289. 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/QMBZ92069285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f8fc8ffe5b778af86aa27adde9d7b1f8619b899bc6f941d85fb751698a0a9c. 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/QMFMF2102818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe69cce15c85aeb75ee8ad5eb7e0091c3da04600d77b1ac49db9be012de2f34b. 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/QMFME2150243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e50016aa24d7bced5634c551debe1a30168a6fd3738e3ae038bd502309b3b0. 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/QMFMF2106161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ecf716b904baa86ee9cf3babdf5a69bfe682b52f810021ca70b9d3f5b5890c. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:22:03Z), 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/QM6P42217583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845211c741d427c474a8b9ab91aeb0d992ff4d2fd68395b27357beab7634a499. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:34:14Z), 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/QMDA62215447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324a03d5d97dee69154bcdebe63cf6d9fd7e1384f680e93adbb850c7936cfad6. 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/QMDA62254105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03731080010215e3d7e2e4e7cc53b41c31838ff9c0a95d38fc863785e61c8638. 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/QM6N22332002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5a1bd14d09a8b144bc01bfbb76fa6c03e264d84a89f096119e149338e9f1e3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFME2394081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a21b456eb30c30be2d707d9794358abdc27feb44133bef2239d4cc18428626. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:39:18Z), 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/QM6P42486520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5a1bd14d09a8b144bc01bfbb76fa6c03e264d84a89f096119e149338e9f1e3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMFME2394081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070b6491844b92e3fb559d1a2b76ab195ec6a9c71ce86dc857ffd23965a6f45b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:56Z), 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/QM7282437047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f864e5758db58c43c0dce7463ab3fedaf56d7df11e2c53d024562ba4dfd32b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM7282437049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73edff2c889fc6d9d5d4d265351fa3acab7ac757788741ea05a6d5f9216a9b0c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM7282437050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2748827c1d89ad4f57777a39a214969ea0dcad5275da862a86a0a78c276e73. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:02:21Z), 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/QM4TX2452700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6fd2904ebb29caed45a2f317120fc044dae2ad18364780c3dd155f323f351d. 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/QM7282437052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383c18094879d50c6d55b7b454592ddf16b906552ccbc24722e8b9c7a763e025. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:42Z), 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/QM7282437053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77145a134bfe06498daa67d2f94ba58e737911dd84afd324d762d8fcb05c1e38. 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/QM7282437054.