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 0xdf013c98d04a7e75d14f431e31765fc87639accad0533e067c11a998f14e17c7. 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/33747fdb-1ba9-40c5-ae00-b929ae47d448.json and https://artists.proofprofile.net/proofs/artist/33747fdb-1ba9-40c5-ae00-b929ae47d448.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 0x6e0f5ab9ea67515002cbb781f5c3cf1748cfa34729c81e326b44d468e1d59b54. 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/TCAGR2259656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423402b25c50856de9f188d87431fa3acffc067f5db52283d665a3c71b249915. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAGS2200736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98091d73ff1da1eca250f0a93ed5547e963d28d22c481d6725ddfea57cae8c19. 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/TCAGS2200700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb24a24b6d33657c448ab99b66d1de3309e84245428d7fcd9900e3bea8a7fd20. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAGR2299919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c363313741700123bc89c97719b07822756eb744801e50c0de72da365755592. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:43:11Z), 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/TCAGR2299932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cbeafa57cbf02845df73ed9d73e04dcacedfc65f3cc5c39389b4a5c1d7952d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAGR2299944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ff8ae13850690846cb1807738c8a096830275f720e319d98f9bbdbecc56b15. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAGR2299946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17285b29a8b38012d9998bb33c8c2b58615958bd1cf71a63578f07799f5964b3. 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/TCAGT2366996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8965dfa960c935082c97d0e798e9efa2309609d88cb8788f7ffd3b6c46b00421. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAHD2337304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8c90ac6627a335228202e6623d36b173e4da30c682e7f79cc11fdadbe868d5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:52:37Z), 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/TCAHI2360708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d5f24ac703d456c73bacd072618393eb5ba7cf29ce6bbb8e36ee035465777b. 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/TCAHM2390675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758be43878048fcf0f86c21ffe0d4fd0607c677f8dd7321a126c536d0bbf8fa2. 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/TCAIE2422692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca658b1b1ea832d408b7dc8e330617515a20d84792f05ec05b9ceeeb5065c45. 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/TCAII2429896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22987875819ff01b34c56dad42f795d68bfe05b501eed664c9012a3b30967b0b. 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/TCAII2429904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cc6a00578b5fd46275556719eda85606bca51cdb080dbaf63ccea8fe3dccd3. 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/TCAIU2444500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6e574881e01dee68fcf71227ac6c36c87778ea1023ab09528f231f535911fe. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/TCAIT2444537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2669d0456e82716bb7c7152218e58610c0d0c8628da26ebd7cec5a98ed613c2a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:38:16Z), 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/TCAIT2444549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376b228a82ba0a4ea0f6a834e9a08b8a46a8be8b6489125943bc498447a3c146. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCAIU2444568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ca066815034988bbaf95c550b32536a179f0f618c8e65759ba2d60e3006134. 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/TCAIT2444577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592f3cb827c48482d89b33079641564f4b8dc3418fe0947ba9803e4fa6c08952. 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/TCAIT2444589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270c59143fe4de37cd6248f369ea9a2816914698c72fdf69ff9981766a20913a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAJE2584060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6c5eda13e41be49debffba749942b0aca85159062a0f15621c77d23637c5de. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:24:59Z), 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/TCAJJ2579406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b727598a69f61f52bbbafff2f63e006cffeb55fd5b119f11b49399b4ef1575b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:05:25Z), 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/TCAJL2595851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166a254e301823db4d924ccc6a23eb31783e3e668a9579ac48c03722635784a5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAJQ2577534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1f0b6a3ac0077c8d1b0a607fed4da1e5202d76aba583c8315f077b4b2140a8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:56:26Z), 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/TCAJU2583135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa0b0ccfbbd433adc175c64385b76caef7baa20a6b1bf8a6b9262894d60a0cc. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJY2557125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4716f8990e785b3a73a4f6e2c7ddabbdb935d5d6825da9980b9c16d3b51f7e2c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QT65X2503225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8984860fc19f3384a3cda371dead4b970711f0615aa98a61032d14db47924172. 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/QT6632571627.