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 0xd1cee73af0aa4984e6a4f4ae2ac58b870bfbfa20fd8d8a0db0b6150a53923a9d. 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/d91e3d83-7bdf-4eae-890b-7f25729e6d02.json and https://artists.proofprofile.net/proofs/artist/d91e3d83-7bdf-4eae-890b-7f25729e6d02.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 0x5f67ca3634ae150eb5380f0c9a0258d69140d684fe585a45f15d19983e7c8737. 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/DGA092312108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8675a015621562e4a9bb03e389a45cfc321519d419a25ef3924b45725fa14887. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:14:27Z), 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/IDA172222081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425945adf3f3d6c7ea16600adf50a341a26c746d88f0926aaf6351d2f7fbba80. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX872309443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c438d127d84d0d6dff06ccf6e9e376c95fc131d114eb61253cbefbec6a42a4. 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/FRX872309445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347655883dc41c443df7756db1ea319af03d45825e74f52ef5a4836c069f032a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/IDA881909005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238be2e2b520e00171dda5fa55fd95c2770874a057f525a44990071aad1a87dd. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:42:44Z), 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/IDA881909008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f22d51c4cf0af902b08e6b95524afb5af114c53aa4e2b925e0f6e07c57678c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:37:09Z), 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/IDA881909009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944e405f12bbec10b9bdacffd258421c9c4cf9434f9696e95a0dff2aefda8ffc. 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/IDA881910412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5b5e9448a2cb3869b1da27a9ee819a2915478d4beee45d9e56ffa4e6e933f0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/IDA921904765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a42165704ea769459880442537d17084e6d5a4b02bcbc471a0c32bbc78b52dc. 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/IDA921904769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc2a69a220f6af622713a0933795a9571b73be2a9e9ec0337bb05ba88877183. 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/IDA921904768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253d67b0cdb862643bf86b6a93abbaa9c233b5a523ea84dcb14ff1bd7365d892. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:57Z), 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/IDA921904767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4866aef80008791dfdcaa07c9611d8b4342f9fa3a38c9c6cfad9b0c9f61c35. 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/IDA921904771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610698f808d1e50102e17907f27440e9b00560bad6e58359e21debc56d84f089. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/IDA921904770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5bbb296dc06bc2ced560c90aebd33f53031a9761edab555bfe8c98203bf02a. 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/IDA921904774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ab98437e2309db91d87821a3b3cbbc54ea3643fcac8dde4464dfbf3303147c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IDA921904745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7120bbe135b936f0c439625d3c85f31cb34ff07948b210f104ad9c752cc87b19. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/IDA921904749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25b354c3b5ae702b23edf6fde214a6d095c13df6e7b574732731df824d8ee67. 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/IDA921904485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57097bcd2ea117edea1b294c0383d29322d0cb6cca3927357fc6b396e31ac26e. 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/IDA921904752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b30d4ce2f262a892d03ea04a2bff6052948e2031e4bc990ac9c5a17cc7bb1e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/IDA921904753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbc386af7cf08ebc6bd69f8e7608201c79994021ffc66e11364d93a4e13cecc. 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/IDA921904758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb846d35a6de0ac89ddc09799134bc6865482e5cfbc895a90bd26aa6c2b81da0d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/IDA921904757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60b3d3d0a978938923789a99bc9482ac4e495a12c25c7ede2d9e0d937c66b27. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/IDA921904760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7899a969b49ed2b481c862a2c05c54a5796b63fd1487ebddad77f2f4b2fbc1d6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/IDA921904759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a02cf3fbb066f62f6871f0387ef1efc9ca18e21c8262657c49a92f6a7624703. 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/IDA921904762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dbdec04a1c4dec1dbc7f46092039a5f62cb6cc4b5e2b50eb91504a6fe1f404. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:24:27Z), 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/IDA921904764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ea1605ed08d7b62ccf45bf3042d6d27b3fd8d234dda4ea3e9b948db315b2da. 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/IDA921904763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef51d2db192bbb704a97efeb82f1f83a790a09af5d7c1018ac23fe394355fec. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:30:19Z), 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/IDA921904775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8343a546f8a64084fc56e28238adc6d2dbdcc6fc7dfc7a300833e066814f2092. 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/IDA921904739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0c320bcf3999948800638d80efe56bd7c82336bcff96b20d1169338cc17478. 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/IDA921904740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f480ad69a8088ca435bba8383b948d2c4a45147ee0eac4c52117034262a87a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/IDA921904743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5d18fb9688dc76d7756098cd2493564625fd7f0f6f32b5492f2379c9b9d086. 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/IDA921904465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc64c0042779be270aae959f81c2e0a71f89c4a7991bb5284e63fa9ca30da73. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IDA921904741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3496c44288ae3398dcdcc5b8bc7e1ef85d88052dd95ccfb3ab48ae3f468a85ab. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/IDA921904742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3919fbe9443afa8c070d55b5dd3141d6dd9dc190e6459744190afd44a54176d9. 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/IDA921904746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e36a39083ef5b1ae7547bc0d3fcb4e0f6803118263e30eec5c123cda1689a0. 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/IDA921904748.