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 0x4b26ccc061f14839e68a8fe97b22fdb8357f591287c009204ed2fb7869822ad7. 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/aa754652-2988-4457-9645-9952f52a7b17.json and https://artists.proofprofile.net/proofs/artist/aa754652-2988-4457-9645-9952f52a7b17.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 0xd9c3b64e0a0e8de9c492e9c7868fbdb2a6153ef6da04d2bde93ac8cca415eb1b. 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/ARG601010313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568bf3e9671a2bd8b1ecc5943476968121d292f85f13bf8c2bf83e5026177e41. 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/ARG601010314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41affefcc6a72242b13958a79cd7743ff343a3fe434a8b54502ed17f795b24f0. 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/ARG601010315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb621a080b977999ae8c7614d37d1c7c2a45fd2aca00ad5c30a0bdcf9cc0d75. 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/ARG601010316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4abff0b3cc38ebc28a2c70e828cfc7166995ad6887f6469bf8db8276524318d. 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/ARG601010317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bedfadbe19603d9a5393d5bc80a3ac749cb9df11f284ee2f6899b2d059c7e17. 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/ARG601010318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7df831e04e2f9a9d4efe6c618d73ef3114d4070eee9a1b7dd5db1495677f64. 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/ARG601010319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2effcf2f90472c8678a139fc8f4b6d5d887026110a850118ea8bb59307ff97e7. 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/ARG601010320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ed4e3d432aa3bdac6abf8ee2d96b07bafe8bb45a12fe8161f20e8ec0e0e394. 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/ARG601010321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec83dacd3764444625a062c6cbe64417fd34b2c2def9135b6691298ebf9c25cf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARG601010322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd45d18051f1a68b6227990ef4fb6db4a22bad9ad5bbe9e2e10f813ea6c6b0e. 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/ARG601010323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f5054fc0d56d67de16e5d75597745754b7cbd5300e5699bda50cc54e117c65. 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/ARG601010324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9a80eb351be7e5fac9de3ed431c0d543673480651ed966d2299ce38f36ecf2. 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/ARG601010291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc36211eaa05bdb0ac0c6c7fa0a0c620ded488a40b5941afe3d376e88830dd97. 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/ARG601010293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af426d757bd3d7c60d7e9f7a8d86611b8e3b0516f358f18c849be29ae030674. 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/ARG601010295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3e6541e52b46abeb05b87ed6cfbe8aa982d7943e6bb9b4905e71fe4637fbb3. 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/ARG601010298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4a64e62335d7276f632b7a6e773a2a9df8ae53a6938eb8eea15173d82c5c03. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ARG601010299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180b1f837fa1a9478d399bacc73bfd0d0c532c89fa5c571569b7e13a9a6744d6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARG601010300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872671a5b04c292a597aee92a84e9954ad32064367b43375d08653b4e3a326c9. 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/ARG601010305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9111810276a840f2d23907257b2a1035bccd204b6cc7411524510c1877a9147f. 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/ARG601010307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886851300bb74ed75cebaa2391bc0376e29108ede4d03acf87e6cfe783d0c129. 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/ARG601010311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0c8d3653078905eeb02b295705029a9972c3279df44e400f12cdfdbea9120d. 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/ARG601010406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af846caad74aec39e4c4cb5311f08ca3e8ff963677f00d3c2a53d6f99064369. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARG601010407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82181331081c9c738f091101c803955db16cc6fd359ece40437339e6d85f379. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARG601010409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808766e7039a2e3db5f735324fca19c506d0b9e352690949259b25a39061f861. 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/ARG601010410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb2d697a6d1db5082edc266df116999a558f06a0b8241cec4174e5236713402. 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/ARG601010411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fddeccc737adaf3025e63adddafd59823d80af4325c3ecdf479493c7e2d04e. 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/ARG601010412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393f23d7e7806b3acdac3e631765df0b9d075c17b067d4d0ed2f70d401049352. 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/ARG601010415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e372b922b6754f077f8faeef7877e37b3fac24b5c0db918a2c286fcc131af59. 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/AREA12300733.
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