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 0xbf983f413d4f047ef079ff0cfa4c21bdd82b218be1126e21820d65fa872461ce. 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/ab247b6a-f94d-4b78-88b1-b227c49b8da2.json and https://artists.proofprofile.net/proofs/artist/ab247b6a-f94d-4b78-88b1-b227c49b8da2.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 0x0b4326be287fbd82e793636706377284720cb5c6e6f613f7496ead70ef384864. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEU340200332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5134ba06d3f35c4b83f21cb7439c1e197ad194abc8c7f327e35b3b2a59dc1ea. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEU340200334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92ee863aaa1bbf59764a4d7f44d9e527874ffcacef2b9021c0a4cbb3c162a31. 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/DEU340200335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdee4ab3f24b219d2e3465c6cc0d61bceb6b3cd0e8d8b9608c842c8292d7515b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEU340200337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6055dc5a3d06b934e0150875f12dae2771f3ccda5c9c0eaa5c8bbc4d04f2fc6a. 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/DEU340200338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d6e0fdd8b2f9919975877e574c84bb22f329434f9cc8a1bf6a36d848f83f95. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:04:13Z), 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/DEU340200339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4503ec2f4e2d64f8ab0c737f57906f9caf863c7bd419d626e4bbf8230e29b2e5. 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/DEU340200340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70bfa58f2970ee8d574dc9ae2401eaf0fc1566f051569aaf427f4e175eed598. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:17:59Z), 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/DEU340200341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088a0c8d3e08740f3cda02347889080d9d0dc0cddaa5f164466652258bf2218b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:26:39Z), 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/DEU340200342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926b3667a812ec402b9c9c5b13971c3cf2281404732ad16298f2f757d4199910. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:31:13Z), 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/DEU340200343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4ebace5c72494bdd95461468c4b86e7b6d59cff6e7fcb1831d0513c966d6e8. 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/DEU340200344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a0579078897b12946973e60ec82383a2ef5eaa048b917839efe8b02bc99971. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/DEU340200345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a6f7c7d690719996e12d74bb0b16503dbdf6339b44291f0702c435316662f2. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEU340200346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30f421b08d08c5b9c076f31696fdbf91b86ded44b9bf2fc150b4061b57e616b. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEU340200347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fa28d0928960447b969a05c4999465542b9972cee53d4c8aa48edb8e89e907. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:50:26Z), 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/DEU340200348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166dde5d45358e90652f7da6f8ca9cbc2fba31fd535494a94471a23b74e8866c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:47Z), 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/DEU340200349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617de488a2750fd5342193c45d79afccd1c63fdcf0f238a303bd5168bb5b5288. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEU340200350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bf9a55920eabb9a5991c393e99caf89d83bdb9d0eaa7369dc1db058d1dbf0d. 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/DEU340200351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c36332aa83e4dcd95c7c86dcbbc6b8da8d0faaee69dc167c0991b7d6949513. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:59:15Z), 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/DEU340200352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0983e9a58740256e7a20e6e837cc4e07446bf564f5f80d9338a302ba6d6c00. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEU340200353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ec0b9ca0168851f5b15e286a6051d0240b0f66546ef42c31e49bd682156150. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEU340200354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff05857b8efa76f33e1964dfe2533be5d09bb1a7abb7f5090b270a2ee0aafd2. 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/DEU340200355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddee0c51257bdf0c4646024716954586b9b7d33a05cf9252cfd95e9cb4f6bfc. 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/DEU340200356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff76f8c50e7eb426fd783d62868747f668691a5e28873f699fb908eb4d983c32. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/DEU340200357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac6b427959318cfecd8ebd97e61ec36cbb60979214d2930459841c68a3959da. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:59:46Z), 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/DEU340200358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ffff3886b3c36162082a62f6b39433e6ee75094cca8849b81b5d66259e832c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DEU340200360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a48165c76788682c4b2fa8d31652643441161f71c649df18cc00a4967a9303d. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DEU340200361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e63f1f74a9d41d116fd64c263166a25b52022afbfc68cc5615304e1026d891d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:42:16Z), 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/DEU340200362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29c5341f7add9e9bd08854d386b52c7dc4bdb46c7a1cbbe6ba91de0a6838e75. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/DEU340200363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef5b57715234ce965dfd96ee87f7354701f35be28a4ea5e3a5f2c638a32ac26. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEU340200364.