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 0x733d9a9e3ebcedad810ed3b5fb5a48870562d9a4cd9af7aa7bf3521dd076bfa1. 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/7539756d-f0cd-440e-adf2-2e8b289d34f4.json and https://artists.proofprofile.net/proofs/artist/7539756d-f0cd-440e-adf2-2e8b289d34f4.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 0xdd0789a427d88ac5727f7ec3d1b728b607bda8cc8fc186589910d7d9496a4484. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX53U2355632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec392d86b2b42aee00c653d573ba4fd4c53ced4dd79b5f4d1b39336a48f2612. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:46:24Z), 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/GX53U2355634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c62d3b8a8325f6c8fe1364504f29ff5f6a2ae861765a89c29688107896cde4. 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/GX53U2355637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c21602f1b58825a22acae8b516f523c78afc601f1422924a46cce9203e8086. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:42:06Z), 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/GX53U2355638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75db3090ee54d7cdd51c5310bb1fbfd348be751f6b634cfc34db34000e39788. 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/GX53U2355639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fe70c751fd4e771155610e3f5f49dd26badc6e8f9c3ad409f56203adb3ebd1. 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/GX53U2431264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc64b2d524909b4d8190e5ebffab70a32c35fca77134cbee086b9ae05e772bbe. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX53U2431265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd131342cec65e5165f396721184ff0b9b84864fd99e8dbdd690096ddd59a5a5c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GX53U2431266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cac02d8a5f7e3e0e985d2e9a56c51f6b8f7caf308538cd6db09835817ac1eb. 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/GX53U2431270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d9a338375fb06ce4003dfba41a46fd7f80f5514fbed1127e969bb970d6d49f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:20Z), 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/GX53U2431271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290968fc76c6d41ae64c12931794175b2d0b1678d05cbe2e14d817097aaddf88. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/GX53U2431275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccfb0215b5ebb24b0e5551b0c9003712593a2d075aef1546f9c7a63142712e9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GX53U2455662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9571e686f8ba5ee53801b8c84f28f7acd3fd6a7d0b3f02bf1ff80a0472324f19. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX53U2455663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18223b942abb425f2ca6385a00a5e5cb0e1b9cf0c64990c991b7787e81634a74. 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/GX53U2455667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce9c60b4ac430354b5439db46b84d5cdf2aaa539509d1ff34b8731651516a2c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:19:06Z), 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/GX53U2455669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f19ba071fa829582afd2431bd819b0e1bf66b31b93d23749f5fc1f6f030b35. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GX53U2478667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b20563aaea2f5066919bc3abc8fd73052b3b6abb72acc59ade963c9b9a9ddf4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:35Z), 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/GX53U2478668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3402338850245a3b0c2fe1e548b22784e6bd1793e583ae7aeb5df42f4d57af. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:18Z), 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/GX53U2478669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf5a236a12aa0a80ab4f04e0489c71a65f0c43658c6517261f4527b3c1ffde2. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GX53U2478670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc674a1cfbdac18c987c27a9f05c8588c8baa2c7d8bd35bab47c96329f4602be9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:52:21Z), 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/GX53U2478671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64f3310cc2f56009ad6f0559d32707d38422af3795cd4da5b147c4f49f5b406. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:34:35Z), 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/GX53U2478672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef51b02c092eeefa0a1abbad3f709b08c594e49f999b6492d9e5581ab7bfb164. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX53U2478676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c43ae0a670c027be51a4b99728da21ab81dba21ac90eec201b1301198708da. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GX53U2478677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45650d025b87df757895a979f0e66edc4f89a89e0277865dbf5d7b3f3078429d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:41Z), 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/GX53U2478679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dcc473429ac21332edfa7ba6f2f25bdfd45a55ae71a883de683f2e337736fc. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:58Z), 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/GX53U2480179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d66e53b3fc63922c9765e27546174b72633cf17a7ec6d14259b4d22a59d078. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:15Z), 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/GX53U2480180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42fb947c07fa1a9bdda32869cb42c4cac54c32ad5f0ef1b3cfba4d3c5e2acb6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GX53U2480183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2296503f90aeaebfd28e6cbe92c14207b1b3aa333fdb634239404d831256f977. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:54:08Z), 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/GX53U2480185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c11b314026094a54e640483c70951b6068f010b9830261c7ffdaa7ea8dc9d21. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:14:32Z), 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/GX53U2480187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437e00f790eb805cf9fa02839f23317b7373674bf36c9dd8fa19eb158ab1549c. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/GX3Q92562091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b28ef3d9a33b284ca8ae2126f46501226364e27241143e4dcd7b6c4d502e216. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GX3Q92562092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195980be79734141f43e7515f6fc522e3c639cc786f3d648a7ff04756fe34062. 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/GX3Q92562094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d63e8ac2601fa50e029633a63cf082e475dcc7681677f34190dbb479e7f698. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:53Z), 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/GX3Q92562095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6de49853ce13769da5497de3a01cc49b796b8e62a9e9247314b441bb2c44d7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX3Q92562096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90209a2206775579c68b7fd1170471085b120990b321808eb1f7b9ecfa42bf6d. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GX3Q92562097.