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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 0xad1c9ce16f56d5de2e5bb1981307d85e417209e68727b065da0e3a073b7ae0ab. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db4edd91-90cf-4f53-92a3-74a657fafeb0.json and https://artists.proofprofile.net/proofs/artist/db4edd91-90cf-4f53-92a3-74a657fafeb0.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 0x52d40a0a60c13b89a50fcc1284f19e5506a367200033ce41b6cdf1c4725c8628. 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/BXBRU1800130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad2adbcf8c8da0eb14048cc41f79445c9bda223b7683b289c3031bd9cb047b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXBRU1800131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2071cf58fefb86dfc0cffd21f9d2e25f39acb371736ee6b7be8d192efb98f7c. 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/BXBRU1800132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0659685212d9ac3ce26d75c582c33b47d14815988c679b81251a911a996013d5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXBRU1800137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb6c409f438ba283baa5d6d958146c4e0029a8e73c5dd2f41383da1b36272dd. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BXBRU1800141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd6bbc5fb96ee05424791df6662c9149d9b567f87889293eb9321430083d19d. 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/BXBRU1800142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070200cc1efc4d28a2120d82e9a8875c921576973407e72bb0082ec4f161f636. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BXBRU1800144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb0fb1dc295c643f8551731e29a6fb2a49c0dce1cd7455b07c30c83468424df. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXBRU1800145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2dffe48570d11c921b69855060f96f7f0c426b6b0ae833a157e97d566c9be7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXBRU1800147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea3a2abb8f9c24d01966072f8e92b1763cacc01d10360200d92f06981a32c69. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BXBRU1800149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6223de157336004d823f96957eed83c284b822cffb4597bd95d8dfa59e0322. 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/QZGLS2568192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664c5e6832a4f5148f092c5350efa5639b274754a1e9a9a2dc3574079346400a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZGLS2568187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6465111af5cdeba5daa7aa95c286897b00372892737326d8e25721e31d1405. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US7VG2444357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c8bd16ca3e3cda49b4e5fb8a724ea675a43517a5edcd94264b396e95bd5d42. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLS2568188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba8449e460bb365fddcb39b89602c4216ad549d3dc5b328f21992b7d02ea207. 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/QZGLS2568190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6223de157336004d823f96957eed83c284b822cffb4597bd95d8dfa59e0322. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLS2568192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e5a3d6a6aeb03943cc6340e8a95bd3bb4118309ce92785b63b79fcd46bb358. 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/QZNJY2443199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9272d9e8745225f403ea4d464cf83446448766c76a4bc2ba2a3c0d244ed61acb. 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/QZGLS2568194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664c5e6832a4f5148f092c5350efa5639b274754a1e9a9a2dc3574079346400a. 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/QZGLS2568187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2d30bed18b89e4b6827612b9ce19f95e22e7b99728e9f083586e8f3bafc245. 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/BR3WE1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb729f33413252451426c9ff0f3cf955a041ffe640040dda4d6174f634d032049. 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/BR3WE2100006.