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 0xe426a69105446a52b9d42a1253bcf05c13bedbae898e1a1303bd0222df3f4ae2. 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/807fadd3-4966-4f21-adc7-395e6002e010.json and https://artists.proofprofile.net/proofs/artist/807fadd3-4966-4f21-adc7-395e6002e010.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 0x244c4c69985eb86bd1e30e8fd489fcbdbd66e1c9d1b4b2efb30341bf61476ca8. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/TR4591001816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244c4c69985eb86bd1e30e8fd489fcbdbd66e1c9d1b4b2efb30341bf61476ca8. 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/TR4591001816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07adbe1aae289be72bb3d77c5ad4c8f5b17126a0acd5d13ef2383c56c6bc008d. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/TR2061200732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247675f57acd049b5891d81b702b1e9236448a56ecc2d919a935f7672fb86ece. 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/TR2061200724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccb4b047b67fc463f5d15b99680f088b5e3d9245beb4271fae9b4b9184b2590. 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/TR2061200730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd41d1e7027082f7842dcee78832eff673c3eddd2b9a2e90b95b91eb28ffbf03. 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/TR2061200722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b944bae95ba19cb761c774ee9a58ef9d23cabb744c1208fd19e004868e2cc2. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/TR2061200727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5bf34a588b2213ecd8095fefd6f708f3766feaa86053bd314127bf7c4408f7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TRBST2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5361c8cb8f8aadfb73639c3d89fe2d634a9fa5c5bf8e1e19efb9926112d309d4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:21Z), 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/TRBDK1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe86ee5f73586bf52fcfd43507caec56e31f5274eaf2823f3f31ecba21cd8f04. 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/TRAKF1614624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde191816698a8d88775a10d82e282842f5fafc08c45c067282608267c4a15b36. 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/TR2062101452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7ca37371ed88dbf439d215bb2ef83f7a7218fd4160deae51e807abaec73637. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:12:33Z), 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/TRBZL2100636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27b6a93ae2e6e259b33b11bb5f2066fb9782686fc77c4e4b942869027a95adc. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/TRALJ2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4258c95ac5b3c0d6a9496e799b4f80404dab218a5b2c8f4be30d5be7fdaf9e55. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:31:59Z), 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/TR0432304602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda49299b0a2b01ee1ccb6100aecd458b857ae4fc6d811debc8a516979c8c6f74. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TRAKF1623602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4705b8ee1b7594ce8192e27f72cba76ab993506250eb921bf98ff5af526f9e45. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TR2062401545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fcf27c36327cca27f3be41d09ff37c026723890c96269b538adffdb3a92814. 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/QM6P42403321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e8b95f240a189c78e88a5757f33d8ecc1fead0239e3921542b090140d6e387. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DGA052444781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc995ee8dc02dbe968685b8425e792dd58b7a67afb710c6a55bc12ff9ac90307. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:22:03Z), 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/QM6P42476635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96193e716af554be5c6af27348c7e8be851b5bd1ee1c99a4f6f377ec194994b5. 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/TR2062401547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e066929f31a46e74c0f2dc4335bd5d4711c83bd2d24673039cd41004be1a68. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TRAKF1626380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f1957eabfdb6f6347ba332f35f4ed3b46d498d109dc8d6605e2b59f570d782. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:22:19Z), 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/TRAKF1626548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda0485ba4ff5d39b70dd967ed359576cc5213c81b92cbcfacc75fa3689f4d14. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TRAKF1626616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd44d08f8e9c37e235f1542e32beb6e76192cd6dee97df587867ead2bba74752. 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/TRAKF1626679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051784803dbe606cafb2928ad0a8f756d4c53128d050fec0ce85b446d0113434. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TRBST2000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc19a1018fdefbbc8642916241390c8d0f52ad668d7f0c84c85cff4b2a0979a. 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/TRBST2000050.