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 0xf9ba4204777ef9324dc95ae42088c01769f9b629b20bf1001eec57169a1803f4. 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/8279d98b-11e9-4366-8525-3d7f7d871212.json and https://artists.proofprofile.net/proofs/artist/8279d98b-11e9-4366-8525-3d7f7d871212.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 0x5fea4aef4535758e37027cbb79c62f4a8e6ad036446f0419fa45a8615593d253. 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/USY9R1201896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d125597a23c6e9ff8f65d94ebbb4ad06c2819058fab12eebe763669e1e31ca. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:35:28Z), 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/US89R0672678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a001302c81922f61abab9c9291d3d07686190a093d6d0dd78a6663226fbfd6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US89R0673683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae7371e8836ea7e572a271ad3de901bb3d1b6b6190994472857686e50029bb9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US89R0672881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d11392095545bd98308a58116cbacde8e5459ebe246ba2d6ae5167404d1ceff. 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/US89R0672085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634dbae5ed755bf0703577739afb7ec375729120dd78510d14182c8f5fa4d406. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/US89R0674301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f81f999d02c998a6915c79b9a4dc8d53b37cfccdb85df9a09cc691c688b83b. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US89R0691814.
Holiday Cheer - a Smooth Jazz Collection
Somewhere Somehow - Contemporary Christian Guitar
Christmas Treasures: Christmas Evening - a Saxphone Christmas
Tropical Holiday: a Steel Band Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a02ad93005fafc04fedba5d23c84ece1da4fff59452aae5ee264064140111c7. 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/QMDA71481168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf78f02bdb9e616b0526d5589c55a1820bd7c20cd39b33e0438487a54c7c967. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:40:35Z), 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/QMDA71481188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52ef8ff8ce8d774b1e2aff3b4a3a447d8b021998783377a5e912d26d7bda1c7. 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/QMDA71481169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faeaba7dd7458fa168b6ca65b8a679cb250960fe7ace3d06cf90863748fe826. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:19:04Z), 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/QMDA71481189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d58b14b42d2a897877af009075533d4e93f99e207cd77cdadf28900030bc4c. 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/QMDA71481190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48be2f2ef4759a58d8bfc4b15e92e78fd1fbd91ecfc4d3c0718a84a1c21911a3. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:54:19Z), 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/QMDA71481170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f07644d558dc56eaeed59d2b99ac5a9e5edea6855e3291352216426745fa30e. 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/QMDA71481191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb3c8922e475dfaed17f96d546259df11feb4d9f47382810edce6a02b23f312. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:38:39Z), 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/QMDA71481171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8167f75b76a1a96a1697ad5f86ab6d0130ef35b69b0bbc6faba26c401030ccaf. 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/QMDA71481172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c3d6ee453686acab997d0a0f5fa39dc76352b70078b5e7ebdd7415faf85002. 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/QMDA71481192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9284e4a87b24f8e575703bb684ab0f8601464525dab1340039e29be8c37e5589. 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/QMDA71481173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db4374cf219d3c219499bf27338db9426d3215404c15113ecee98d9839a2022. 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/QMDA71481193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cf227bcb9307ef2faeade4017f56f92fce36b81a772b2adc0e8407130abf49. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QMDA71481195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc068c19a030f7c587d1a0b7881553d9c1322701b1cf93372d7d20df14fd497. 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/QMDA71481175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8682fc033ceb235808cfb7a208734a972021708bf45f926e0716b3a7ab795e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMDA71481196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa948299d14d591d54ac6f745b42f032467526d543884a57bf17d93054799a69d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMDA71481197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cc775c465ded3dccb317226a3222d9331e297db7ba5f7b562a8564b248c5d0. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QMDA71481177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0023af294db6cc25418dd14a66a8bee15dec16d918cc01e40d8dd2f3d07325e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QMDA71481178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb931f6e012a9c9bea4e67f6b146ce0e22cfeb5c25a72e213aaae25dba6c5d987. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:01:47Z), 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/QMDA71481198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1583d59bc4379e41235e5c33c4a7d75ff708af4b0b0216cc723009551361276. 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/QMDA71481199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c38c1cc182c36f208aea5e3f63d1d39635a1d8cc6ad59e3e6fa537054d57ba1. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:13:06Z), 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/QMDA71481200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf415eeef796de814b1933f90ac6fd2df53e43a8a41afb2f744fa0222562ec0a1. 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/QMDA71481180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa480bb3e53446ad9511a8ab2e23c2e4ecca7e230cee3a50bd802bc20646805cc. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:43:20Z), 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/QMDA71481181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc764f0d2a188247ce6c30756cac7cd51f63b8024bb5ecaeeebfae24427af3c6. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:41:21Z), 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/QMDA71481201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ba40fdea8fa69e07b84c94e16b48804c4767f9332ee3a8cc0fdf28c37e6ce9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QMDA71481202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658cc3b0db5514058d4b253ad0bbb543be1b5d142a656bb6d5be4344ca6af602. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMDA71481204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58afc228b3a4f6aa6fd1e3d58e867a85470412f67967ae422845938974e7adac. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QMDA71481206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdd4ab7408963ee30a1399dac71b5bcd54b619b4431c91f334397b7e20580f0. 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/QMDA71481207.