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 0x586cf31779ac1ee1cb622f42e876ac4f8c614be34cda624448b6c39e02307c5e. 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/df53531a-8ca5-4e21-a0a9-77a1b25c55ce.json and https://artists.proofprofile.net/proofs/artist/df53531a-8ca5-4e21-a0a9-77a1b25c55ce.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 0x0e1ba5ebd19eb481311f31ca06d1b257dc4ea213d1e5464c73d9545c80456711. 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/MX1611600242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1ba5ebd19eb481311f31ca06d1b257dc4ea213d1e5464c73d9545c80456711. 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/MX1611600242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe18903c1d3089a888c875a2cca76b67287e5fcc37a50ffa9f2b11add1ac48c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/MX1611600243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d022ce3881b3d8a9fa4b4400dcf655be8280e9378654cf72382a3d66c60927. 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/MX1611600248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15028a2c695d15ed4a7d3c03050d152a67941f03c475c3afd7f33fa4e25a0b7. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/MX1611700268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a75f1a4bf99a4096899c1f9023265c6ce57918132d5dd63bcd5db96fcd5c9e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/MX1611700269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e87a6dee27f42154f4450e5088fb9c5ccec1f83b58e55893d40151d1a03cfd. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/MX1611700281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf22fab6b14ccc7035875c8506f91fc6bd39a0c7b1067827dc511c762748015. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/MX1611700278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0509d64b50cd46f19945878ab8c329020d3dfc3129b719e9f71022a78d2e8c. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/MX1611700289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e68622903b4bd8064861290410b200f40991b2c7ccfe8d056c090d8ee72030. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/MX1611800306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ae5a9f0085f7a9065f44c889782aef7c4a92a162e718075f314f9b5848fa69. 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/MX1611800312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bfb78524fbfb0623c29ae1cd953d5b4a3ef4915c8a64cf3ad24cbadd836081. 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/MX1611800315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec2ee5346acaa17e609acf711b7d526b300e797fd99ac90ebe9bd50a22f6c55. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:02:44Z), 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/MX1611800317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6efd55b694ed3f1b894264b845df4afaf8d507a2140b27c41fb6d743300d46. 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/MX2832135175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdcf0bf1d64d61480d89b2455c435e60f7b8bcdea9fe7543f0a43a1d823a267. 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/MX2832143084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240be110eb96451b7fd77d069433eaaf4e0ca1344abc47974041c16f89e7048c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:06:56Z), 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/MX2832143129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdbb615e034a55fdb3de476b5992e4ff566e3a5885581b95a33fd006d7bb98f. 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/MX2832143133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c55389988f7361a891c66fa21855f964b96e34d83557d01975585b1e8be499c. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/MX2832143154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79045a9818a877580e1018cb9bf3bcf230c3600a6e8651b508635c2b49b675e0. 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/MX2832143155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99809fe83829709962eca8d2660579f8dea84d05f6554acbee3e9021501d314. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/MX2832143092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacefb3cc740cf323671aa0ffa4640dfcb9685d200696674c9047692b8aebc46. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/MX2832143094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367f691d72355229ab2389bcb659d5af08489037ca4ce2218ed83fb0af8843bc. 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/MX2832143097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6881fc5d2458593088f4bf05534c22f48b5640e827ecb641f0f414a38c65c07d. 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/MX2832143168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377a2451f1dfb98dcc846e6e9eef22895de459064cb65d46f7fc19b9459dac89. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:55Z), 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/MX2832143170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73885b7e420b0619b57b03fa95532b89ea5533d92740aaabf7d94e69dd1677b. 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/MX2832143172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0f13657adde0eb8db7b770f14ed038659971b2e55fa13f06ccfaacb2925b5f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/MX2832143173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005515b71f086db2a45559ba4871b46c8f5a916198861f9a54eae9ce000f1bb3. 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/MX2832143175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2346875c7804d3b204c6ed5a11debe35fa92582c209274eac9fed2fceaa13ffd. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:32:38Z), 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/MX2832143177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffabe9007560cc653af6205d7c3f8f0c894e846dc8a62e6449e9a6eb1b46b293. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNJW2423106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ccd97fdfd1e73c31ca74b5e21a533aba382e43127315a29611c32c28b5aea6. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:43:18Z), 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/QZNJY2511739.