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 0x2bbbe2d888f86e01dc1668e389ba24266fe44302646550033fbef3c9de311dca. 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/bff44606-4833-4ca7-a7f5-526bf34a8159.json and https://artists.proofprofile.net/proofs/artist/bff44606-4833-4ca7-a7f5-526bf34a8159.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 0x8c9a039a81e200211eb9aaf0ca18df20c7a6db2dabc7530440e093617a7568b5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZRP42287460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fc85a78d32170e25dbe4b102e96025311b85fe5b2deb75fc601752b5f758b0. 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/QZRP42287461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7ce9d6b24ad103b0c0af3cc421923a6daf7c1f78f4121a15c66c5c6aeb0b38. 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/QZRP42287462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37479650a025c0eba9e6bb4a8f8e59872298e97d5ac72e5774839d86d24bc54c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZRP42287463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f398eea9da817cbbc3520e154f5df4c303945c4b753442abf07de421c6e21c4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZRP42287464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb6c9b1a6c8eccb77441f647b2af950ad64a81b5d5daa7eb4dd3c151ad7523e. 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/QZPLR2218305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4122201deb5d02ef310f2af6283c738263123d527d6caa4bac89019d46825b90. 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/QZRP42287465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccb007907b9db1440980804fc050959cfaaa968b92bdbd37381f57a5f0f9d2d. 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/QZRP42287466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faf883b3c35e5a43e725c152a15bfb57f3ee2693e76bbd9e5b0f3773d6b7e91. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZRP42287467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed94f336d01d3e42dff277c2da58d0b1e6bf2a3868c3f689dc23a099d6be4a4. 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/QZRP42287468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f7b044d562b9e34224f0cb14b7e9ebe251126a4adc696eee16cb7089861e5a. 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/QZNWU2221490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf8b58cdedb09bae2de463203ea420d3799de2fe239cfe306dbaaacf44482f3. 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/QZRP42287469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7015a51ae17a2036986379f9b2103accfbf3c84f7c3a128a475fda5fa26d0d01. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZRP42287470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b39241087bbca6f51972df7b10009b259bc33af06300aadf518247a569482a. 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/QM4TX2414189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2677578c2d9d76f8dfe6e8022661dbf510be1a41074a08fbd80edfb3752a8e7. 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/QZTB22346933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9df6d5ce15858559bf84ed8368274f98fb65c7b9751a96e19b4380e78889b4. 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/QM4TX2414200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedb6c6595e3af7bb7399dae15bd583ef5f686005f03324c73c98a4b3215124a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZTB22346934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9308c97ed15c45d4236b9d5f011bf7ab6b19cfd8de9e607bbb9f1d004dea812f. 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/QZTAT2331950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b201c4507180f95e0005f014e1101e2dcb20e4c679912d3d6ac9c3f83fec0c. 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/QM4TX2414206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1800050977143e847abf1f1e7207a9634b36ab08664c59fec44416b67b8f739b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X41796605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c471e188f88357e421505df2a3040854d6840c3eb209c35977239a0ae434645. 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/FR2X41796606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e9b42be62897b97da67ee0546066c91e1bfca2f2140a689f0b2074cab6f765. 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/QZTB92273821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2011b7d4c92b7c78f5a874cdcc63e9775bf0d75043e6787857895c25a3a5ce54. 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/QZTAT2256817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bce774b57f3b854024143711469ff31692765f4356e6d5d8e3024e5dad8ffc4. 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/QZTAU2152585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b3db5ed25ce073e97c045cd8b7d3faf314625682345a5ea1c44653a9b343d6. 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/QZPLS2154487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc290fcdfefbc705295897b0422cf9796c6962b809341a9dca25ec3661b15d1be. 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/QZNWQ2109008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9e85206bc522f31a59f8fdca10572d782a7766efd395dd868b420ffe25ec4f. 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/QZES62172157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd168a1d9e6da8276282b9223eed80ab2b3915c48b3c6c6ce7839f143a3ac5e01. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWT2080036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f8f544c042555ddec8af1ff16fad681171ad30f0ef8ae2cf322f45147a67ee. 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/QZFZ72055605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c4d7f560202aa67efc9167f4bd4575ff2f931f1de556f0eee895a09e4ee54d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6M1905671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa98f3ed0cbc3bdf4c80eb604399b486bde7054232d2dccc25d378c97763fec5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHNB1957054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1c4c3cf2bcc82defa7c22c825a4bdd973d15c324c414c067dcfec487326a78. 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/QZHN61919436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce6b74833b872aaf1738b7f6fcb566d4dd0a56f83f0a69cb973150a61a253cf. 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/QZFZ41993099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22078e9203b338a735b979a0f60d94d6d9aa8598a5ed0f506e663e045010e29a. 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/QZES71944089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59746632805d89e6e2b4bf73ea2da102b58566042ec140fa68fc2932bd225a66. 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/QZ8LD1927726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b75f9914c1c117bba668b1632a7ec6581f85d9caab8688286dcd6eeb6f80c12. 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/USDY41880290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1800050977143e847abf1f1e7207a9634b36ab08664c59fec44416b67b8f739b. 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/FR2X41796605.