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 0xeea74ae6eedd4f02b514dad1bdac20c86833f00a54efdf3849aa212eacf4b27f. 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/dfabf0c8-0d8e-4b49-88be-c47f21e3739c.json and https://artists.proofprofile.net/proofs/artist/dfabf0c8-0d8e-4b49-88be-c47f21e3739c.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 0x89f078e5506acb598fbb624b889f508abb5ecc559adc68ab1426efdaae737068. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/FR9W11914150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeca461eed111aa5e5f9ea468851fdc8dab5c9f1fa43bdd8ee25741cc5e34442. 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/FR9W11914165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df1b8eaf461c8faf030f6510bfe7e24c575b3697d0ffaf0fe697e73cd4aa3f8. 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/FR9W11905379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73214f4de3adcd9be47bb53cd13b776dc3dc0ec575d9eea2d7fd4b97f3956a83. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/FR9W11914152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd90f1d612ba173a23ac075ff6dcb0441e4b7adb5502a8c7ff73500ed875fe18. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR9W11920021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd58b4be34b212eb2cd7d72fa10ba7a0a5a57b6a7911faee6ae4650321c57a3. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/FR9W11924313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd343eca538f5a001e23cab46d58df04868f39460ff3a254abea98d5fe9cee96. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/FR9W11928844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e36d17e6a434090458941e54412c622ca31b83cac581d90aa19c8dc6392d3be. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/FR9W12000305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10eee9e7410c7e86c806a99e99c8b21c37b18bd389e69e7c5fa7917fb48df889. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FR9W12000748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb852efb93c91d02949cfbe65dbeb0fcef6d831ed853821fe8bc4599881ca7466. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:45:05Z), 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/FR9W12006126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec2ffc359b042c7a63d07de9fda74e36dc8217f5eccd239d4d64f8f6ef7784c. 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/FR9W12000752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b58029bf21725e375f7eaebb187e42f0c02579d074c87a9f93e0ddd7d48af52. 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/FR9W12006118.
Je marche (Extrait du projet Bendo X Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6090d978faa8f0f0c623ff2e29b9949c4e94b440a413c21ce83b5e49a657a21c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:18:27Z), 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/FR8FB2127590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5ef1f998431e934a576a8c911e535609d7cdf711f0b34d23bc53417f3798b2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:36:08Z), 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/AUMEV2385962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b9a395584eaa1f279405d23e8afcabe79a2f6dafebab86bff6faaad5fa8d8a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:09:54Z), 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/AUGBT2358040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b9a395584eaa1f279405d23e8afcabe79a2f6dafebab86bff6faaad5fa8d8a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/AUGBT2358040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee5c6836879f83039811c75cf6ebeeb500c560eb4d0406718bd99777a3c50ef. 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/AUMEV2425007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf737131d047d0dd1295dbdbc027f970d87d0a0c2dc1560df06d6ce5c51e7293f. 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/AUGBT2443061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe826f94ffd741de26cfebdd7c5c55c8840d4ce816354b665b4d90747ccf4a68e. 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/FR9W12204813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17590dce5bb7c120e26fc5c18913a444138ff272f64b762600d97db14049db5. 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/FR9W12204827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b013f21fec2d392fb30cd4e2340272f81d47a15c1d8180dab98df2a91c6410. 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/FRUM72100597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a3116119a34b2327129c1616eed81fc172c95979fa05567affa25ec226d188. 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/FRUM72100287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f7b034377ca88bacda4f2311b76b5b969e75f763d4eb52ba74934dd7163a00. 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/FRUM72100598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd48bc73bc139181b4ebbff3c0e5f7e0b0bbc5eb68834d471acfb8ec703a9efb. 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/FRUM72100601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5518beda35b59de75cb05d24f4bbed56d1e22131bece1b216ecf2d6e8f91d79f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRUM72100603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9f289dd015d6b36c8103fa99d785df3417c529232a2048f24e132bd7cfe421. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRUM72100606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd462c6474b77e6fb8d0b0ffe780b613d6e126c508c4206947fa08d657a10cd48. 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/FRUM72100609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb8da09aabe161794171f23a5b78a89204547c0f493743ae6e1c670e4f8f404. 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/FRUM72100632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e23d03949864d3234b27da581b67a8a79128c15f80930fffc0f01d7cfae1448. 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/FRUM72001362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17590dce5bb7c120e26fc5c18913a444138ff272f64b762600d97db14049db5. 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/FR9W12204827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd48bc73bc139181b4ebbff3c0e5f7e0b0bbc5eb68834d471acfb8ec703a9efb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRUM72100601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b013f21fec2d392fb30cd4e2340272f81d47a15c1d8180dab98df2a91c6410. 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/FRUM72100597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32d50ec72367359d5793497f235df5a53d7430892a1a655c90d759ceed89fc3. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FR9W12204821.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621e025c59775bf2c63c9b318cec3cff785d0432c2597d74adca1ce7a8f504b7. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR9W12204818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ce63cdcf0e47914a9d281cb465aaabd0544fe5612bab7907a11874a2131736. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/FR9W12204824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34712bec018fb6a3d9805187e2f3bc4706176192282eceb4f3bb806da322a0ea. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRUM72001517.