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 0xe7f4c5ce2b1703937bf21ecd3d9cb0ed992837de594bcc4564281b9b299340b1. 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/55f8106b-ace2-4359-9f04-722205ae5534.json and https://artists.proofprofile.net/proofs/artist/55f8106b-ace2-4359-9f04-722205ae5534.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 0xa7879354eae2a09f31ef0ea5bd32a88f277c460828c32116960dcc4c696b57b5. 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/QZHZ42009819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965014bcf8f98b1fe5ced9f5166445a75d9347ac0aadd0afebc4452e30650a0c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZHZ52055623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed77ddf0e9712c4b602c0fe11f1f584d48a7f7c13d031512d05f0ab2c52e6ee4. 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/QZHZ62023278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f495c1828e94cc18d3a84384cc0d83d55a41f5aace5d6e88d8cc5d9a7e86c4f. 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/QZHZ62068987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8b1b2c443629559df5d1f27359169fc3a4b4c217c5c459fc5fc9c5a3cbb798. 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/QZHZ62076181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2865aafeb84f66c4e6a5e34ba6d2ddf8a4c653c582a3353471739c40f2ca29e. 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/QZHZ62076182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3376db2c3fae8cbc52790b48727da519825781f826ec724241926ec0076e25f. 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/QZHZ62076183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58b0f448c273725d8b05dbef9c449d534c41cfa3363fbd511b21eaf5bd9f78a. 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/QZHZ62076184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a940b3c8d67ef4eda33fe692c5f5f53e52b2d980d4600a5f37ec2dffc94e55. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZHZ42138770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae8c0fdc39339a4270a6b7c18cc9b452ea088cb76b44bc732fbe0b2bd0a481b. 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/QZHZ42138771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdfd7c8e65c4e123df8908bffcee44956faba317b612ea653a96cd0b507850d. 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/QZHZ42138773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7b2a5060d704ca62049efd82e1442d5dab8060f3ce584d7ef1310dda695d10. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHZ62188137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1138f60e6f2ef30e9c64849294c38d3d5215b57dd0089a3d6e3453213b439465. 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/QZNJV2222488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f76c7e64ff058598228ad8cdac9960feeaecf05453f7a61b7408adfeae1b0c. 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/QZNJW2244655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb9b051908d5fc1c4971be80536766db436e2969b5f74a81a08de5f81b812b2. 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/QZMZ92208001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0909dd2693961b18cb2e196689e97f508739f7ec686880cbfed3332a40db98. 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/QZNJX2231876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165f086e9bd2b1c5ee8ce9f70470cd9477b63f22d0263f74a55bca260b0b44d5. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/US7VG2348389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea11b55f538721a615393b6e6fd048963949992ec4550f9acbd0f2857baf527a. 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/QZNJY2307148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fe809e10878e73b88523b9e9ac96d27cfe9ced121cbdbfae8cf3db67627a80. 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/QZNJY2371040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5756c461df361ad664c5e70375e71429f28c4e095ea47d375ed9b40c348fb11. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:42:23Z), 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/QZNJY2371037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1068aee93bc5f763df70c2073d15d1eb9681113b6e6fd9ea776db976a184977. 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/QZW9M2355711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddf7a93bf8a4b9619fc05911d798fd981eb802d4e884e2fa26f1fa3f28e8564. 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/QZGLM2593649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79c0814b4ae4ac0f670097a6db06c5b4675d67940be3d6765914edf2875e710. 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/QZNJW2566194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4897cce53398b432117a14cde89cb29b77ce404931bb0c3856dd3e2a80ca881b. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNJW2566196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c280bb6ad5aaab878b9b7c15677e901efb5ec3f4a839849d8125f61f28f0be4. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNJW2566197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07162de7d2181281d23aef3b48400fced17e1f584cc3e108d20a250106ae9150. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:17Z), 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/QZNJW2566198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663bb09a49d7193a34b2bba070b28de620f64b9e84952bd6e11d086aa7686929. 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/QZNJW2566199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94b2829e35ef3c9764d585420405111573daaae228c8ff74361e48b9829b5b1. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:08:52Z), 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/QZNJW2566200.