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 0xf784aea53e75c317946b2205861b0d7e3183213b7394d85a5a5edc4de1c7b070. 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/be5de106-6e86-41aa-a8be-27ec0042d2a2.json and https://artists.proofprofile.net/proofs/artist/be5de106-6e86-41aa-a8be-27ec0042d2a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x96a35b68c919e79f5e4d6cfc8b296c732acf6e7aeb1baf571a178ec1b39b0e4e. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/FIKBR1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313d8cc29dbcbdce1ef06553323851060821075ae9986aa3bb3a8af4b649ab1c. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FIKBR1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df972ae25cd7cb505737b33c8a35b61212bba0926451e9d515d781b11845b80. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:03:45Z), 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/FIKBR1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0332929320aa08722ccfb86a7ae6b97c5ca0d8ade34a5adfab844d5aed352d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FIKBR1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d450a2b3a1283da4085dab16667af56a2b6c65ae3528e3b612bed304e8c75d6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:02:56Z), 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/FIKBR1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e3342c10a68301af5195e06a5cfb0dceeb3fdfec371296d63b7dc85c426a0a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:33Z), 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/FIKBR1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b49c8e4d51f5bc22fc1cbae73557067dac72f26c019d71f9fedd70fb2a9d41. 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/FIKBR1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe822d9e5aea473b843f17ddef5dd2ca87a5020f0582bf62da011cac4d5ee9afd. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:37:06Z), 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/FIKBR1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e26e137aec8212f2144e0217c336b6f443dacff3d3ba1f85bad01c8a76cc6f1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:06:01Z), 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/FIKBR1700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f374b9b46592af78089b53600a30c25e313b5d933cb2387ccc3e9b1687d3bf6. 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/FIKBR1700019.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd152466c4a2431f7640af1d165739072348d7fa02900412215082b0208b560b8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FIKBR1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e590f2bb928fb4948c84088e769d6756078be4bafaa847ae0487b74cffed60c. 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/FIKBR1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce4c056ac444c2aae67fa3dcba0d6585b3e4bec16ca4cddc08710a25a0f5ae5. 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/FIKBR1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ea3a0f51960545969bf09b26cec0a8558139912d9f3e2cf48175917cc65e2d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FIKBR1800009.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaff02eac9800ad72e47d1513b8156801b1f78959f2f5ec144cb27cc866d4f59. 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/FIKBR1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587139cdbaffb6ab7f9dc069d210e925b3eebe7b6b8a36c69aa57a05dbbbb535. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/FIKBR1900002.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408e6149fa9af4de8dac8e69950263e8088922fd7728df4534aab6138bdc8374. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/FIKBR2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb55aa90cef246995835e84e64e82b18b06eeaf5e1349f5da2947d8d31a5bc1. 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/FIKBR2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37842e0fba9fdf842e6f81b679ebbb4b2c4e3a126c03e56910664673120f9674. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FIKBR2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475756b6fee7ec85cff96fa436e3392d564b6c2f3ccfc6d86425f13f4fdd1e11. 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/FIKBR2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7c91d2443a06ce73d7506c75d7d0f5b7edbd3cb6fec672160578043405ff28. 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/FIKBR2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f2ed1b84fa27de7d4f281b868e350dec302383b476f70384fed5506581f114. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FIKBR2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd982ebaf9e733ad07fdbddced43fb4a72c84d2628906fb436b5708508cf85569. 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/FIKBR2000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594bbfdc0bc56e0482e7e33e6636263240924e2c556b1c2b26943e4b9e499cc8. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/FIKBR2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5073f71105a900d4c24aca8d1e69a99c2da22b963da4e1c0f9a94394be233a3d. 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/FIKBR2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4588176bfdc7905a202582c8d5e32b9da7e37dd57385de3a0128a994b665ff. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:26:23Z), 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/FIKBR2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6eaf216535147f8f10f6772edd940a73ecebb768cb75f4d5fd117bb448b04c. 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/FIKBR2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0756311ae1d8647f8496888ecfadcff930f395ab00c95a77b263963e25a1810d. 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/FIKBR2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd405ab0bbbf0bead02237b7895cd9a9a7660231a8858792ebd04c95a485120. 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/FIKBR2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1092401303b1efcb4639a11a773eb25f22adbb9f144744103f7e8352dc7cc7c6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:51:43Z), 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/FIKBR2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1736cf99190e9d017d1cafba8ba4d275bb8268f4840bd0b7b1ed9d01b2efdb4e. 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/FIKBR2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad563607787b9dfc343abbc919561d967c6057b3a52e0d2ba8d2efbdfea7d1a. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZWFP2592927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdb68fa5473a539208bd30083b862d91f98ebe395c80cde42d8855554ee41f4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FIKBR2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76ba2176e269d84d69b6f67eadc80ffa18e1d76e3306adb1233d19d2d1d91ac. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FIKBR2500018.