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 0xfd4fa7a40f11e6a251a40970a9580e4cfb9c4796dd56808d1785ad8296cdd7e4. 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/f54e626b-ea58-40b0-ab5f-bf97126e9c59.json and https://artists.proofprofile.net/proofs/artist/f54e626b-ea58-40b0-ab5f-bf97126e9c59.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 0xacf37933ddd1f4596936ba5dfd4ee8a97af3a52b1c300be885452b8a02cbdb42. 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/QM9WM2100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42881cbac0593a81f181f18869ade543f6279e8177d59da87868834e3679898. 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/QM9WM2200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4ffb4a94e6843886d4fa86e6f18e2640b251e73f33dc07500d08815f955127. 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/QM9WM2200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52641e77671513c779fec661f98f4b2545d8aa604a184adf75100c251e2cd972. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QM9WM2200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dac5e230463d03a9e443b38168dabd3bee65a0cd23fbc312d7a619e4d1c7568. 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/QM9WM2200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42881cbac0593a81f181f18869ade543f6279e8177d59da87868834e3679898. 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/QM9WM2200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98e7828d334ef672f2c77421cb754d41b05aa8ab7a985230a7040de2892356d. 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/QM9WM2200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b965d4c67ae651495e0087b70086c8077ec08bf168bf8e5a403ae354594d144. 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/QM9WM2200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52641e77671513c779fec661f98f4b2545d8aa604a184adf75100c251e2cd972. 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/QM9WM2200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4ffb4a94e6843886d4fa86e6f18e2640b251e73f33dc07500d08815f955127. 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/QM9WM2200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc5fb9784b0b5d2f7b8e89d8442f4062199ff387317e72a71eeac97944c646c. 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/QM9WM2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6338d7531db9aabd5945682fb2f7317e8b107d1ec35f4096077199fe9cc4b659. 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/COSO12200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f496a9ba33a5151fc68a2301ded574018eec647426b2e3c3b3698ae80a3412b. 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/QM9WM2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf45eeee1989ab07d2b979a41ae5ae1cd22ad0c73542c7730cc88e919329782. 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/QM9WM2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e49dc23436c20e323c982894a197c98f6be392505432b4f662306b036982dd. 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/QM9WM2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1357c5b65207c5738097fc6de6bb9ba0f38f0528c6a0e8ea390ecdd9037081c0. 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/QM9WM2300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c5d42117bafc35b87184a83ecdf7f67893f449286558ae0c1e2a3b419eab95. 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/QM9WM2300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85c4d92c8356798bd6c369d9843cdfcee408c91d1e7da3c0df27f38476bd732. 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/QM9WM2300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95925e50f29af4b79eff9b582a831ea4d2c5f8ee90a3288dbe1490ce340abcd. 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/QM9WM2300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc715a30f06a5146a065b843866539adc5cebe15ebdd3a99b62502510821d8519. 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/QM9WM2300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473402fd767eaddd61e70fbd724f0f241a8babb27bdc5779c3e161b40908fdcb. 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/QM9WM2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2052f7856581235f726c3b2e11da33d47bc90fa5491bc0dbee6ea2bc1283b955. 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/COSO12200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7a0bc6f959423b6d6a2ef06a578bc5c71b48ebcc6e88f88d61fc3122e1df1a. 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/COSO12100328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6338d7531db9aabd5945682fb2f7317e8b107d1ec35f4096077199fe9cc4b659. 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/COSO12200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58202f1b977ff5b9efb80c3ddd5bbea39226e4294b86ae7d0e8017a5a2dd46c. 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/COSO12200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da08571e9757c45240813cdebcb39fbc953dcd3c95ecfe65f4ddb755e39f254. 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/COSO12200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ec73cef240f33fb23a7a076bf39dcbc6641ef740e8609e76599d3de3eabeb. 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/COSO12200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5fbd1ea4a991dff9e40cc188c7e1c5ee8cbe249633ce9b23c060b4b1dc3e21. 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/COSO12200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c15d6dac79bd99fa190c6a13ca494c4690a5b745adc788cbee7b06c24e2a7f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBRKQ2409432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f20e1f6d58c7180471e5b5ffe368eb4e4a273fa691752b0864f6c5e935b8c0. 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/QM9WM2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f496a9ba33a5151fc68a2301ded574018eec647426b2e3c3b3698ae80a3412b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM9WM2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb454ae9faaadc8ecbf8775ed2b5362ea8b7ce351ed21c54a9b83f12fa8459b4e. 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/QM9WM2200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a98b7d90a0942d1f1f965a2f12101a3b123033bf7feb8dbd7d1e46c3581897. 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/QM9WM2200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad74e280a6e8c1ccdc3cf6cf8eee3e2567646eaba239d44fac0768f0a3398d1. 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/QM9WM2100147.