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 0xf500713a14333d942afc032e9aa3ed1e00d7bf7b99481f0ede5f4d27a5b8ef03. 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/d1fb3f57-781e-41c3-bfcb-2359166c61db.json and https://artists.proofprofile.net/proofs/artist/d1fb3f57-781e-41c3-bfcb-2359166c61db.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 0x453549ae5c830b36eafc29efbfc471d244b2cf5bf0008a28f8fd3a0074b3d23f. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/GBSMU8849263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9575269169704e82286146d139bb03f196654b9b0ceab9d63b701671493ca38d. 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/GBSMU8849264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b049f98cd0aa5300289b2c6d1d77adc845a7432c9d1f867763c9020945003c. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBSMU8849265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf675513978b29a0b18886eed9ace2e9a6ded26b786ffb0c98c5cee1eebc2a98f. 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/GBSMU8849266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a3c5d24b03a40fd227ee6e8526c326b92237ab9363f80d495024e3a433cef6. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBSMU8849267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1802d2fa89ac77c20c3d7340b9f2535bca686379257e4b1b4d95862df07a35c2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBSMU8849268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8a04e37d7af7b7186cca12b30bf8c9bde6daf893f05a94df48c1004ecccb28. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:27:59Z), 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/GBSMU8849269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f796bc4aa4407c56235d10fc08e243dd5bbaa03a2c5a098f7b7c92a3081a3b. 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/GBSMU8849271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a0d48690a4e17c782bcf936fb9f211251a0ad16a40867bb55bfc8d85a4fbff. 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/GBSMU8849272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ae6cd66ad7bc3ec764fd6d8f9876d591fc7a68e07e8de459c1f94282abcdab. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:59:49Z), 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/GBSMU8849273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c5a00d46ed57781cbd864fd1a6dd41acb1900825d7a73e92135d32c0025488. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBSMU8849274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4073a1cecc78de0005e7cceb69947acbb474e8aa24a20f4770cef30514b4a008. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBSMU8304871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736434d154abd2b19e6b47ae4a6ae2a2a9137b136e32595644707aec77d2a121. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/GBSMU8304872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfabacccbb361af7046c43067d9edc7e830eab213625e2acdf4a07d72ff587c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBSMU8304873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090c16c67a042f635b9f2885c57cd728d251bd286117365ff44b342887c2a05e. 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/GBSMU8304874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d49152dc29c29545ffffdb72a45eb8865d77086ef5309bc9172f1423c2dd6a8. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GBSMU8309846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff498b3f9aff4c38491e71fdeab9b3d5b6617a3f38ca07a33da039381194c66f. 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/GBSMU8309847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e848c6bf14c6c18d1d1677529d0a67ded57d2d82a3112c7ecc35f261e44fe2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBSMU8309848.